About

About Nanjing Diamond Hope Machinery Trading Co., Ltd. Welcome to Nanjing Diamond Hope Machinery Trading Co,.Ltd. Brand DH, which originated from Nanjing, Jiangsu Province. Our company was established in 2009. We have been deeply involved in the auto wheel industry, provided high-quality services to customers all over the world for these years. Forged wheel rim, aluminum lug nut and wheel adapter included are our main products. Using 10,000 tons of pressure to press the alloy which has been heated to nearly 500 degrees into a rough embryo of the wheel. Undergo a strong cold flow-forming process, enter T6 heat treatment and CNC detail carving. After these complex production process, the forged wheel could finish production. Different from casting wheel, it has higher strength and toughness, fatigue resistance and good corrosion resistance. Every wheel could pass the dynamic balance, roundness and leakage detection.