Procurement of materials: raw materials that make up the motor components, its quality directly affects the quality of the product, so the quality of raw materials is critical. Donghui motor in terms of quality control of raw materials, strict requirements, to eliminate undesirable material flows into the warehouse or production line. Donghui motor will Supplies before sorting the material's quality system, delivery, product prices, improved capacity comprehensive evaluation to ensure the long-term cooperation and excellent quality supplier.