... 3.wear/impact/fatigue resistance. 1. Customize precision PEI product,PEI injection product and PEI part injection mould,as per customer' ... the brife introduction of our factory:Specialize in high-precision and micro(3*3*3mm)-to-medium size plastic ... ,with high hardness.Advanced equipments:precision grinder,milling machine,driller,wire cutting machine,EDM,CNC,full automatic injection machine ,projector ...