- Long life time made by special heat treatment equipment.- Elaborate Grinding.- Competitive prinec and quick delivery time by mass production system.,- Stainless special steel. DY-1,2 : Through special heat treatment longer than other clippers can be used.DY-3 : Special heat treatment as well as suface grinding being worn to prevent.DY-4 : Operation safty&comfortably by apply flexible and durable poly acetal handle.DY-5 : Because handle is longer can cutting thick fiber&paper, Exactly.DY-6 : When clopping, thread of the finished product. to minimize damege of the product.