... Slide blister, Plastic bags, Carton, Vacuum packing, Sprockets and chain set box, or as you likeMain marketsAsia, Mid east, ... South America, AfricaOthersOur products’ designs and patterns are improved ... SAE1045 steel or SAE1023 steel and Japan heat-treatment technologies and equipment3) Ultrastrong hardness and abrasion resistance4) Special surface ...