air conditioner spare part 2.One year quality guarantee 3.Material : ... Item NO. mechanical part processingMaterialsIron, aluminum, steel, copper, plastic, carbon steel, nylon, bronze, solder alloy, HSS, tool steels, or ... , tapping, mould design and processing, casting, sheet mental working etcApplicationAutomation machine, medical device, industrial machine, automobile, electric appliance, and other ...