Haining Hemisphere Auto Parts Manufacturing Co., Ltd., founded in 1998, is engaged in spark plug manufacture, integrating the scientific research and production. With reliable product quality and circumspect service, our company has developed fast in recent years, and the scale of production has expanded increasingly. We can offer 12 major kinds of more than 100 types of spark plugs such as multi-ground electrode spark plugs, V cut center-electrode spark plugs, resistor spark plugs, iridium and ...