Factory inspection
It undergoes strict inspection before leaving the factory. The test items include:
Fuel injector parts performance test, fuel injector parts durability test, fuel injector performance test, fuel injector durability test, fuel injector spray quality test, fuel injector sealing test, fuel injector needle valve opening Pressure test, needle valve slideability test, appearance inspection, general inspection, chemical composition, lift and flow, shape and position tolerance, roughness, metallography and hardness, spray quality, aging treatment, low number of injections, material composition, Flow rate, carburized layer depth, sliding property, surface hardness