China Home Appliances Suppliers List

Main Products: 6k5mm carbon fiber mesh grid fabric, 6k5mm carbon fiber mesh fabric, 12k 480g carbon fiber fabric twill,

Introduct: Carbon Fiber Fabric ManufacturerSpecializing in carbon fiber fabric, aramid fabric, fiberglass fabric, various prepreg fabrics, etc.,

Main Products: Ceramic Fiber Needle-Punched Blanket, Ceramic Fiber Module,

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Main Products: Granite permeable slab, Glazed terracotta panels, Ceramic permeable brick,

Introduct: Yixing Snail Ceramic Technology Co., Ltd. is a comprehensive production enterprise specializing in architectural ceramic exterior wall terracotta panels, terracotta rods, ground ceramic permeable bricks, and sintered bricks, with an annual production capacity of up to 1 million square meters. The company possesses strong R&D and production capabilities, currently operating three fully automated kilns and two imported Handler extruders. Its own raw mineral resources ensure more stable and reliable product quality. The company can develop unique, personalized terracotta panels, rods, louvers, bricks, and ceramic permeable bricks based on designers' concepts. For a long time, it has provided designated supply services to well-known domestic real estate and curtain wall companies nationwide. The products are made from Yixing purple clay terracotta, sintered at high temperatures of 1400°C, offering advantages such as pressure resistance, frost resistance, permeability, wear resistance, durability, and colorfastness. With excellent texture and decorative effects, they are widely used in residences, shops, offices, and municipal projects as premium building materials. The natural color gradients revealed in the kiln's intense flames, such as various glazed surfaces, textured finishes, grooved surfaces, curved surfaces, and arched terracotta panels, showcase the raw, rustic texture and subtle hues of clay, embodying its original personality and imagination—unmatched by any artificial coloring. They are currently the ideal decorative material.Since its establishment, Snail Ceramic has adhered to the philosophy of "continuous improvement and卓越 quality," building a solid foundation and outstanding operational achievements in the ceramic industry. It has become a renowned manufacturer in the Yixing ceramic sector and a trusted enterprise for users. We provide high-quality ceramic products and are confident in the vigorous development of China's construction economy. We will continue to strive tirelessly to offer优质 services, create value for customers, and fight for the future of Chinese ceramics!,

Main Products: Cold-rolled coil, Color Coated Sheet, Galvanized steel coil,

Introduct:        Wuhan Maituo Jiawei Metal Materials Co., Ltd. was established in 2016 with a registered capital of 1 million yuan. It mainly deals in cold-rolled coils, galvanized coils, color-coated coils, and specialized steel products for home appliances and automobiles from steel mills such as Baosteel, Baowu Steel, Echeng Steel, Handan Zhuoli, and Baosteel Huangshi. The company has signed long-term strategic partnership agreements with several large steel mills and clients, maintaining a monthly inventory of up to 10,000 tons and a monthly throughput of 20,000 tons. Its sales network covers the entire Central China region, extending to Guangdong, Shanghai, and other areas.            With continuous development and expansion, the company has now become a comprehensive enterprise integrating sales, processing production, and technical services. It collaborates with various home appliance manufacturers, automotive steel users, and production steel users, offering cost-effective shearing and distribution services to customers.        The company consistently adheres to the business philosophy of "Pursuing excellence, high efficiency, and versatility; controlling desires with principles, and achieving integrity and win-win outcomes." It long upholds the service tenet of "providing high-quality products at reasonable prices with comprehensive services." Dedicated to steel trade and deep processing production, the company utilizes its network information platform management system to effectively control procurement, sales, inventory, storage, transportation, and processing management. This has established a relatively complete and modern supply chain management system for materials, ensuring stable development in material trade and industrial processing.,

Main Products: Hanging Panel Tianhua Series, Energy-saving insulation board, Aluminum honeycomb panel,

Introduct: Hongmeida Group comprises Hubei Hongmeida New Materials Co., Ltd. and Wuhan Hongmeida Curtain Wall Building Materials Co., Ltd. Established in June 2012, Wuhan Hongmeida Curtain Wall Building Materials Co., Ltd. is a high-tech enterprise specializing in the research, development, design, production, sales, and service of building decorative curtain wall materials and coating materials. In 2020, the Hongmeida brand was selected for the Brand Power Preferred Demonstration Project, recognized as one of China's Top Ten Aluminum Panel Brands, a supplier of aluminum panels for China's Top 500 Real Estate Enterprises, and one of Huanggang City's Top 100 Enterprises. The company has also obtained ISO 9001:2015 Quality Management System Certification, ISO 45001:2018 Occupational Health and Safety Management System Certification, and ISO 14001:2015 Environmental Management System Certification. Hubei Hongmeida New Materials Co., Ltd. covers a total area of 120,735.8 square meters, with a total construction area of 71,862.68 square meters. It operates four roller-coated aluminum plate production lines, six aluminum panel production lines, two honeycomb and insulated aluminum composite panel production lines, and three fluorocarbon coating production lines. With a total investment of 400 million yuan, including fixed assets of 306 million yuan, the company can achieve an annual production capacity of 6 million square meters of aluminum decorative panels and an annual sales revenue exceeding 600 million yuan. Hongmeida Group is committed to building its brand image, developing new product markets, and increasing investment in new technology research and development, gradually realizing the strategic goals of artificial intelligence and "Industry 4.0." Upholding the business philosophy of "Promoting Excellence, Achieving Customer Satisfaction," the group aims to jointly create a bright future for Hongmeida Group.,

Main Products: Xinyang Steel Structure Automobile Manufacturing Workshop, Steel Structure Landscape Bridge Engineering Construction, Construction of Steel Structure Office Building Project,

Introduct: Zhengzhou Weilang Steel Structure Engineering Co., Ltd. (referred to as "Weilang Steel Structure") is located in Room 801, Block B, Zhengshang International Plaza, Hanghai East Road, Zhengzhou City.Weilang Steel Structure holds multiple qualifications, including Grade II General Contracting for Construction Engineering, Grade II Steel Structure Engineering, Grade B Light Steel Design, Grade II Municipal Engineering, Grade II Foundation Engineering, Grade II Waterproofing and Anticorrosion, Grade II Fire Protection, Grade II Mechanical and Electrical Engineering, Grade II Decoration and Renovation, and Special Engineering (Structural Strengthening) Contracting. The company has passed ISO Quality Management System certification and Good Faith Level certification, and has been awarded the title of Innovative Small and Medium Enterprise, as well as multiple recognitions for new technologies. It is a high-quality enterprise specializing in the field of steel structure engineering. Through the accumulation of extensive engineering construction experience, the company has become a renowned provider of steel structure engineering solutions in the industry.For over 20 years, the Weilang Steel Structure team has focused on projects such as steel structure buildings, factory buildings, special-shaped steel structures, roof renovation and transformation, and steel structure reinforcement. The company has successfully participated in the construction of numerous projects, including: Luoyang Xinqianglian, Luoyang Shengjiu, Luoyang Fangshan, Zhengzhou Baixiang, Henan Fude Technology, Fujian Zhongcai, Gansu Yincai, Hubei Huitian, Zhoukou Sheraton, Zhengzhou Sunuokang, Luohe Shuanghui, Henan Vocational College of Water Resources and Environment, Zhengzhou South China City Advertising Tower, Zhengzhou Lamborghini Automobile 4S Store, Zhengzhou Fengzhiyuan Audi 4S Store, and Zhengzhou Fengzhide Audi 4S Store. The company boasts an outstanding technical and construction team, capable of providing integrated engineering solutions (planning/design/construction/maintenance) for clients, ensuring that every customer saves time, effort, and worry.Looking ahead, Weilang Steel Structure will work hand in hand with all sectors of society, continue to leverage its core strengths, actively expand into various application fields, and consistently provide customers with higher-quality products and services. While fulfilling its corporate responsibilities, the company will create more high-quality projects for society!,

Main Products: Garden rockery landscape rockery, Cement Sculpture, Buddha Statue Sculpture, Garden waterfall rockery,

Introduct: Changsha Yuhua District Wangbin Landscape Construction and Operation Department: is a construction team with decades of experience in landscape construction, specializing in cement artificial rock sculpting, cement sculpture, cement direct sculpting construction, and building rock surface packaging. Wangbin Landscape Construction engages in landscape construction, landscaping, artificial rock sculpting, cement sculpture, cement direct sculpting, garden cartoon installations, cement imitation wood and trees, artificial rock caves, hot spring cave artificial rocks, hot spring resort center artificial rocks, ecological sculpted rock gates,招牌 sculpted rock gates, indoor artificial rocks and caves, villa community artificial rocks, waterfall artificial rocks, cascading water artificial rock waterfalls, cement stone artificial rocks, artificial rock engineering, community artificial rocks, villa artificial rocks, garden artificial rocks, landscape artificial rocks, cement imitation railings, cement pavilions and pergolasimitation wood and trees, campus sculptures, abstract sculptures, and other landscape constructions; Some of Wangbin Landscape Engineering's projects : Shanghai World Expo Trojan Horse, Hainan Sanya Banshan No. 1 large artificial rock waterfall, Taishan Brewery large beer tank, Chimelong Amusement Park landscape, Beijing Amusement Park landscape, Taishan Fantawild Adventure landscape, Zhangjiakou Yu'er Mountain Buddha statue sculpture, Zhengzhou Zhongyuan Fu Tower Children's Hall sculpture, artificial rock sculpting, moon scene simulation, Jiangsu Lianyungang Haizhou Fisheries Museum artificial rock cave and cement sculpture, Lianyungang Banzhuang Mountain landscape artificial rock square cement sculpture, Changzhou China Dinosaur Park imitation snow scene construction, Harbin Lindian Amusement Park large artificial rock and large Buddha statue sculpture, Heyuan Baden New City five-star hotel wood grain carving, Changsha Ningxiang Weishan Hot Spring Resort large artificial rock cave construction, Guangzhou Wanda Plaza招牌 sculpture gate, Jiangsu Yangzhong Huapeng Real Estate large artificial rock cascading waterfall, Sichuan Bazhong Hundred Buddha Wall large Buddha cave wall, etc.; Wangbin Landscape Construction covers indoor and outdoor, artificial rocks and trees, sculpted rocks, landscape stones, cartoons, installations, imitation wood grain, landscape architecture, garden installations, cement sculpture, cement Buddha statues, cement direct sculpting, cave artificial rock landscapes, pavilions, pergolas, building exterior packaging, character and animal sculptures, community leisure artificial rocks, cascading waterfall artificial rocks, indoor cave sculpted rocks, imitation dead trees, imitation trees, etc.; Wangbin Landscape (process simplified as; steel structure shaping, cement sculpting, surface coloring treatment) We have experienced construction masters and teams that can turn your creative designs into reality, adding beauty to your environment; Welcome to contact Wang Bin at 15886316898 or 13809248189Wangbin Landscape<img src="https://img-i-album.toocle.com/view/2023/02/17/86/63eec6b1f3c86.jpg" style="max-width: 100%;"/><img src="https://img-i-album.toocle.com/view/2023/02/17/fc/63eec6bb771fc.jpg" style="max-width: 100%;"/>,

Main Products: 350# Petroleum Asphalt Felt Waterproofing Membrane, 6-meter-wide EPDM synthetic rubber liner membrane waterproof material, 28.5 kilograms of 350# petroleum asphalt felt,

Introduct: Henan Yuecheng Waterproof Material Co., Ltd. (referred to as "Yuecheng Company"), with its predecessor established in 2006 and restructured in 2016, is located in Zhengzhou City, Henan Province. It is a professional manufacturer and seller of rolls and coatings. Main products include: SBS and APP modified asphalt waterproof rolls, EPDM synthetic rubber gasket membranes, chlorinated polyethylene-rubber blended waterproof rolls, EPDM rubber waterproof rolls, PET self-adhesive waterproof rolls, wet-laid self-adhesive rubber modified asphalt waterproof rolls, root-penetration resistant waterproof rolls, colorful fiberglass tiles (asphalt tiles, felt tiles), chlorinated polyethylene waterproof rolls, polyethylene polypropylene fabric waterproof rolls, special waterproof rolls for roads and bridges, polyurethane, JS coatings, spray polyurea elastomer waterproof coatings, special MMA waterproof coatings for high-speed railways, SBS waterproof coatings, drainage boards, geotextiles, geogrids, and various other waterproof rolls and coatings. The company consistently adheres to the principle of "customer first, quality service, and honoring contracts." With high-quality products, good reputation, and excellent service, its products are sold in nearly thirty provinces, cities, autonomous regions across the country, as well as in distant countries.     Our company focuses on the sales of waterproof materials, serving a wide range of friends with quality service and providing various waterproof materials. We offer low-priced, high-quality products to serve friends from all directions.     We provide free solutions to various waterproof problems. Our low-priced, high-quality products are definitely within your consideration.     We will uphold the concept of "service first," strengthen services, improve quality, reduce costs, and repay customers. With the principle of fair and reasonable pricing, a spirit of practical action, and the courage to innovate and advance, we will wholeheartedly provide more and better products to various businesses, assisting customers on the path to success. We join hands with friends from all sides to create a future together!      We sincerely seek win-win cooperation with domestic and international businesses for mutual development and shared glory! All employees of the company are committed to the spiritual pursuit of proactive innovation, mutual assistance and cooperation, unity, and dedication. We continuously develop high-quality products and services to contribute to society and do our part for environmental protection and human health! Company Contact: Mr. Wang 13838546692 0371-60995304,

Main Products: Stainless Steel 304 Sanitary Grade Clean Floor Drain, Odor-Proof Water Seal, Specifically for Pharmaceutical Factories, Stainless Steel 304 Threaded Floor Drain with 50mm Water Seal, DN50-150, 304 Stainless Steel Clean Floor Drain,

Introduct: Wenzhou Wanlin Machinery Co., Ltd. is a company specializing in the production and sales of high-precision fluid equipment, winning the market with excellent equipment and internationally advanced technology. The products are widely used in engineering management accessories for pharmaceuticals, food, dairy, beer, beverages, fine chemicals, coating chemicals, cosmetics, and more. The main products include: GMP clean floor drains, odor-proof floor drains, water and gas dual-seal floor drains, non-standard clean floor drains, stainless steel quick-opening manholes, pressure manholes, rectangular manholes, trumpet manholes, stainless steel milk tanks, wine barrels, small wine tanks, insulated milk tanks, stainless steel inspection ports, cleaning ports, floor drain cleaning ports, welded U-shaped tees, quick-assembly U-shaped tees, quick-assembly elbows, welded elbows, quick-assembly Y-shaped tees, welded Y-shaped tees, filters, welded reducers, threaded cleaning balls, heads, and other products (ISO, IDF, 3A, SMS standards, etc.). Wanlin Enterprise adheres to the principle of "process operation, meticulous craftsmanship, and full-process inspection" in production, striving to build product quality, thereby ensuring the delivery time and factory quality of each product. Wenzhou Wanlin Machinery Co., Ltd. has established long-term cooperative relationships with many enterprises based on strong technical capabilities, reasonable prices, and excellent service. The products are well-received in both domestic and international markets. Friends from all walks of life are welcome to visit for guidance, tours, and business negotiations!,

Main Products: Rapid Roller Door,

Introduct: Tianjin Jinda Electric Door Co., Ltd. deals in various types of roller shutters, including: garage doors, crystal roller shutters, electric roller shutters, fire-resistant roller shutters, fire doors, inorganic cloth special-grade fire-resistant roller shutters, steel fire-resistant roller shutters, folding lift-type fire-resistant roller shutters, crystal folding doors, side-hung crystal roller shutters, wrought iron gates, stainless steel sliding gates, garage doors, telescopic gates, wrought iron fences, roller windows, European-style roller windows, wrought iron railings, and other wrought iron products. We adhere to the principle of "surviving on quality and developing on reputation" to meet the needs of our customers, offering integrated services including installation, maintenance, and repair. Our products are not only aesthetically pleasing and elegant but also affordable and durable, earning high praise from our customers. We provide prompt and meticulous after-sales service, making it an indispensable part of our customers' daily lives. Customer needs for products and services are the driving force behind our survival and development, and we will always assist our customers with a sincere service attitude!  Products: Standard roller shutters, fire-resistant roller shutters, special-grade folding lift fire-resistant roller shutters, inorganic cloth fire-resistant roller shutters, steel fire-resistant roller shutters, crystal folding doors, side-hung crystal roller shutters, crystal roller shutters, European-style roller shutters, stainless steel roller shutters, sliding gates, telescopic gates, electric doors, garage doors, and window security doors. Because of us, you choose. We welcome inquiries from all customers and friends! The start of cooperation marks the beginning of our service! Under the friendly and trusting attention of our customers, we will continue to grow and thrive!  ,

Main Products: YXB40-185-740 Closed-Type Floor Deck, YXB42-215-645 Floor Deck, YXB54-185-565 Type Galvanized Closed Rib Steel Deck,

Introduct: To meet market demands and better serve our customers, Tianjin Zhongjie Group has established a color steel processing and export base in the Binhai New Area of southern Tianjin—Tianjin Jingang Zhongjie Colored Corrugated Steel Sheet Co., Ltd. Since its establishment in 2007, the company has introduced internationally advanced production lines for rock wool composite panels, polystyrene composite panels, and clean panels, along with various specifications of corrugated sheets, C and Z purlins, and other production lines. The product range includes: floor decking, aluminum-magnesium-manganese roofing systems, colored corrugated steel sheets, concealed-fix roofing systems, standing seam roofing systems, glazed tiles, stone-coated tiles, sandwich panels, purlins, keels, prefabricated steel structure houses, and galvanized/color-coated steel coils. Products are exported to the United States, Australia, the Netherlands, other European countries, as well as Central and South America, Africa, and the Middle East. The foreign trade department has collaborated with domestic companies to complete multiple Chinese national aid projects (such as in Niger, Gabon, Madagascar, etc.), possessing extensive experience in exporting steel structure building materials and implementing international aid projects. Tianjin Jingang Zhongjie Colored Corrugated Steel Sheet Co., Ltd. specializes in the processing of color-coated steel sheets, galvanized sheets, insulated color steel panels, corrugated steel sheets, and C/Z purlins; the processing and sales of color steel sheets; the design, fabrication, and installation of steel structures; the sales of steel materials; and the import and export of self-produced products and technologies. No. 12 Ningyuan Road, Huangtai Industrial Park, Jinnan District, Tianjin Mr. Zhang Yafeng Tianjin Jingang Zhongjie Steel Structure Engineering Co., Ltd. Tianjin Jingang Zhongjie Colored Corrugated Steel Sheet Co., Ltd. Shijiazhuang Zhongjie Colored Corrugated Steel Sheet Co., Ltd. CNTIC METAL DEPARTMENT www.tjjgzj.com.cn www.tjjgzj.com E-mail: globalsteel@yahoo.cn Alternative: globalsteel@126.com Msn: sweatlll@hotmail.com Skype: SWEATLLL Fax: 0086-22-88636382 Mobile: 0086-13516258934,

Main Products: C/Z Purlin, YX114-333-666 Angle-Chase III Series Panel Type, Z-shaped steel purlin,

Introduct: Tianjin Biltensky Steel Structure Co., Ltd. is a company primarily engaged in the production and sales of building steel structure envelope systems, providing customers with steel structure building system solutions. The company's main products include: Biltensky structural steel deck series, light steel purlin series, glazed steel tile roofing and wall series, various composite metal panels, aluminum-magnesium-titanium-zinc alloy roofing series, steel structure building roofing systems, and light steel villas. Currently, the company has three major production bases across the country and has established sales networks in major cities, with an annual output value exceeding 100 million yuan. Biltensky products are renowned for their excellent quality, superior service, and honest pricing, and are sold both domestically and internationally, enjoying a strong reputation in the market.Biltensky products: profiled deck plates, color steel plates, galvanized C-section steel, Z-section steel, color steel antique glazed tiles, closed deck plates, aluminum-magnesium-manganese alloy plates, color steel profiled plates, galvanized corrugated plates, composite floor slabs, structural profiled plates, color steel corrugated plates, floor slabs, and more.,

Main Products: Exterior wall renovation of old building, labor and materials included, tiles without removal., Factory for Prefabricated Self-Built Rural Houses with Labor and Materials Included, Hotel and Office Building Exterior Wall Tile Detachment Renovation Without Removal,

Introduct: Jiangsu Dongtai Zeshang Construction Technology Co., Ltd. is a comprehensive service company specializing in light steel prefabricated housing systems, integrating design, consultation, and construction. Zeshang Prefabricated Houses has always been committed to the development and application of new integrated light steel housing systems, advocating for the standardization, modularization, and generalization of housing design and application while achieving personalized, humanized, intelligent, healthy, and comfortable living environments.The Zeshang Prefabricated Building Technology System is a highly energy-efficient green building system with excellent architectural physical properties, providing customers with comprehensive green building integrated solutions.Light steel prefabricated houses represent the mainstream trend in prefabricated housing, marking a revolutionary breakthrough compared to traditional houses, while also aligning with the national residential industry policy of "Four Savings and One Environmental Protection" (energy, land, water, materials, and environmental protection).As a practitioner of steel structure prefabricated buildings, Zeshang Prefabricated Houses will continue to write a more brilliant future with more professional, high-quality, and efficient products and services, along with a pragmatic, innovative, and pioneering spirit.,

Main Products: Epoxy Anti-Static Flooring, PVC Anti-Static Flooring, Parking Lot Epoxy Flooring,

Introduct:      Shenzhen Tiancai Epoxy Floor Engineering Co., Ltd. is a professional company engaged in epoxy resin floors, floor paints, epoxy thin-coat floors, anti-static floors, and cleanroom engineering. It integrates design, production, planning, construction, and supervision.          Since its establishment, the company has undertaken hundreds of flooring projects across the country, relying on exquisite professional technology, excellent construction quality, and comprehensive after-sales service. It has built a strong reputation and credibility among industry peers and clients.          The company's seamless industrial flooring services include: epoxy resin floors, epoxy fiberglass floors, epoxy anti-static floors, anti-static flooring, computer room flooring, and anti-corrosion floors; providing anti-corrosion treatment for industries such as light industry that face chemical corrosion. These floors are widely used in electronics, electrical appliances, printing, pharmaceuticals, food, biology, chemicals, machinery, schools, hotels, hospitals, parking lots, and many other fields.          Shenzhen Tiancai shares your concerns and strives for your satisfaction. Your smile is our pursuit. As your business soars tomorrow, we hope to pave a smooth and brilliant path for you!          At the same price, we outperform in quality.          With the same quality, we excel in service.,

Main Products: Three-dimensional aluminum core aviation board, Aluminum Cone Core Panel, Aluminum Cone Core Panel,

Introduct:        Chongqing Taoye Industrial Co., Ltd., established in 1998, is a comprehensive enterprise specializing in the research, development, production, and sales of interior and exterior wall panels. The company has maintained a long-term cooperative relationship with Singapore UCIR&DCENTER.     Currently, Taoye boasts an innovative R&D team composed of professional architects, construction engineers, and experts with extensive management experience across various fields. Leveraging their rich practical experience in the construction industry, the team collaborates with technical personnel to develop and produce a wide range of innovative products, providing professional and efficient services.     By utilizing the platform advantages of the UCI Alliance and through close collaboration with experts from renowned domestic material research institutions and senior engineers in related industries, the company continuously improves the innovation system for new wall materials that integrates "industry, academia, research, and application." It strengthens the development of key common technologies and promotes the advancement and application of high-tech, waste-efficient成套 technologies and related products with independent intellectual property rights. Adhering to the corporate philosophy of "Achieving excellence through precision, winning through quality," Taoye is committed to creating a low-carbon, green lifestyle for humanity and building safe, innovative living spaces!,

Main Products: K9 Glass, Borosilicate glass, Schott B270,

Introduct:     Nantong Zhenhua Optoelectronics Co., Ltd. specializes in the production of various optical components, with strong technical capabilities, excellent equipment, and comprehensive testing instruments. In accordance with the ISO9002 international standard, we have established a product quality management system. Our products meet international standards and are regarded as quality products by users. They are recommended by China's information industry and optoelectronics industry associations.Introduction to main products:     1. Filters, optical filters, color filters, colored optical glass, colorless optical glass, heat-insulating glass (GRB series, KG series), ultraviolet-transmitting glass (ZWB series), infrared-transmitting glass (HWB series), purple glass (ZB series), blue glass (QB series), green glass (LB series), golden yellow glass (JB series), orange glass (CB series), wavelength calibration glass (holmium oxide glass HOB445), praseodymium-neodymium glass (PNB586), neutral gray glass (ZAB series, AB series), bandpass glass (DTB series);     2. Quartz glass (JGS1, JGS2, JGS3);     3. Colorless optical glass, K9, ultra-clear glass, B270, etc.;     4. Tempered glass;     5. Radiation-resistant glass, radiation-proof glass;     6. Optical coating, coated glass;     7. Glass-ceramics (germanium, silicon, zinc sulfide, zinc selenide, calcium fluoride, magnesium fluoride, etc.) ,