Every link on the supply chain has played a key role for the products success or failure, since YESTEL Technology(HK) International Limited found, we treat the supply chain as an important part. We established supplier management mechanisms and supplier management document, with the legal effect of contract to regulate cooperation modes and processes with suppliers, in order to effectively constraints and guard against the risk of suppliers. At the same time, we always maintain good relations with suppliers, establish a strategic and friendly partnership, form a virtuous circle of unity, trust, cooperation. Through the efforts with suppliers, we finally formed a set of efficient supply chain management scoring system and audit system.