TianJin Grewin Technology Co.,Ltd have twenty years producing experience,located in Tianjin,China,our factory have professional design term,advanced technology and equipment,especially pay great attention to its business philosophy"Quality and Honest First".
Magnetic Transformer;EI Laminated Transformer;Toroidal Transformer
Our products have passed and obtain ISO9001 certificate,CE certificate,SGS approval,and IEC export.
We developed good cooperative relationship with valued customers around the world,we have first class product quality and one basket value_added after sales servive along with the fast efficient solution.Grewin has wom its brnad in world wide and customs's praise.