Establishing strategic cooperative partnership with major suppliers is our established policy。We are hoping to achieve win-win or multi-win supply chain. For main raw materials,we have long-term and stable supply agreements with more than 10 global steel makers . Our supply chain is all over the world, including domestic raw material suppliers such as Baosteel, and high-quality metal raw materials purchased from Europe, South Korea, Japan, the United States and other places.The technical requirements for each raw material are clearly specified. They provide us with the thinnest 0.10 mm carbon steel, stainless steel belt and even some special metals.