Locking Nut,Self Locking Nut,Nylon Lock Nuts,Lock Nut Types Zhejiang XianChuang Auto Parts Co.,LTD , https://www.showstrong.com In the Fastener industry, most molds are made of hard alloy or high-alloy die steel, which is expensive, so the annual mold cost is quite large. Most of the molds that are scrapped from cold and hot processed fasteners are ineffective due to wear. If these molds are reused, it is a great asset for many companies. So how do you get these scrapped molds back to life?