D&S Castings (Taian) inc. is a Chinese- American joint stock company, which is a modern specialized production enterprise including foundry and machining. The main products contains locomotive parts, electric-hardware castings, construction machinery parts, reducer roller parts, counterweight, pipe-line castings and municipal project parts and so on. The company is situated in the high-tech development park of Taian, which is adjacent to the national park of China - Mountain Tai, the traffic is convenient.