... It's used for key chain,gift,photo frame,with PP base and PMMA magnifying fresnel lens with a competitive price. The following ... ,nylon, etc. Mould material: high-quality alloy steel with heat treatment,wear resistance,corrosion resistance. Advanced equipments:precision ... grinder,milling machine,driller,wire cutting machine,EDM,CNC,full automatic injection machines and inspection equipments. 20-years- ...