Tianjin Grewin Group is concentrating on transformers for 25 Years and complianted by ISO9001: 2015, CB, IEC CB, CE etc. We're 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. Windely used in communications, electronics, meters, industrial control, medical equipments and other fields. We are also a provider of power meters and tape and winding machines. 85% of its products exported to America, Europe, and Asia etc. We sincerely invite you to join us to create a bright future.

Jiangsu feiyue pump group Co., Ltd. is a high-tech enterprise integrating production, r& D and sales. Our company originated in 1957 and cooperates with oil and gas companies in the world.

Chongqing Gold Mechanical & Electrical Equipment Co., Ltd is a high-tech enterprise for researching, designing, developing and producing scientific and measuring instruments. With its continuous drawing of lessonas, unremitting innovation and borrowing of advanced technology from both at home and abroad, our company is now becoming a professional manufacture of oil tester, electric tester, laboratory instrument, road building instrument and geophysical equipment.

Located in the Information Industrial Park of Hi-Tech Zone, Guilin Anyi Instrument Co., Ltd., is a high-tech enterprise certified by the state. It was founded on July 1, 2005 with the registered capital of 12.5 million yuan.