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.