Founded in 2000, A_plus is a high-tech enterprise specialized in R&D and manufacturing of precision coil, solenoid, sensor and transformer. After nearly 20 years of development and innovation, now A_plus has accumulated experience in electronics industry, and has built a set solenoid, sensor, super-miniature precision coil, and transformer processing system integrating R&D, design and production, opening a new processing mode in the industry. In recent years, the company focuses on developing solenoid, sensor and coil, choke coil, toroidal coil applied in air con condenser, braking system, car window, oil-way control, inverter and the like of auto electronics; Antenna coil, telecoil, wireless charging coil and sensor are widely used in hearing aids, control handle of wheelchair, CT scan etc. in medical field; Electromagnet parts, transformer and precise air coil are widely applied in building security system, flow detection, power supply, household appliances and other industrial control as well as consumption field.