Tianjin Grewin Technology Co.,ltd has always placed great emphasis on our core business philosophy "Quality and Honesty First ". Due to continuous innovative research and development, technical standards and efficient management,GREWIN has drawn some talented people together to provide effective operation,accurate testing and excellent after sales service.
GREWIN has two mainly manufacture toroidal transformer to be used for audio equipment,telephone, computer,air-conditioner and meter equipment etc.

Toroidal transformer is one of our company's main products,in addition to high or low frequency transformer and mutual inductor. Also, we'll try our best to design transformer according to the need of our customer.

Our products are all exported to overseas market like America, German, Russia, Japan. Also we have abtained CE,SGS approval. We sincerely invite you to join hands with us to develop a better tomorrow.

contact: cathy(at)grewin-tech.com