Tianjin Grewin Technology Co.,ltd, who always pay great attention to its business philosophy "Quality and Honesty First".

Grewin is specialized in the design and manufacture of wound components such as transformer,current sensors, chokes etc .

The transformers are windely used in communications,electronics,meters,industrial control,medical equipments and other fields.We are also a provider of power meters and instruments locators. 85% of our products exported to America, Europe, and Asia etc.

We have passed ISO9001,CE,SGS approval and IEC report and developed good cooperative relationship with valued customers around product quality and value-added service along with the fast efficient solution.Grewin has won a lot of customer's praise.