Hangzhou Hemisphere Auto Parts Co, Ltd, established in 1998, is a professional manufacture of spark plugs, with integration of scientific research and production. With reliable product quality and service, the company has been developing fast in recent years, and the scales of production have expanded increasingly. By far we can offer 12 major kinds (more than 100 types) of spark plugs, such as multi-ground electrode spark plugs, V-cut center –electrode spark plugs, resistor spark plugs, iridium-platinum spark plugs and natural gas spark...