... our capability to serve our clients better.4. Advanced precision plastic injection machine with well-rounded scientific management .Xiamen Jinbei ... Plastic Product Co., Ltd1Cavity/Core Material : DIN-1,S130, NAK80,2344, ... ,2343,738H,718,8407, P20,S136, KD-61, etc ;2Hardness of the steel : 20-60HRC ;3Cavity Qty : Single-cavity / Multi- ...