Our company established in 1994 with the name of Dongying Haixin Product Co.,Ltd. The . it was rename into Dongying Zhengda Metal Product Co .,Ltd in 2001 .At the very beginning,we mainly do maching parts. With the continual development, aluminum die casting, electroforming ...

Beijing Tong Ma abrasives Co.,Ltd is an abrasives manufacturing, professional processing company. For the abrasives production, supply, the use of a strong professional knowledge. Abrasives corundum ( A: 20-900mm diameter ), white fused alumina ( WA ), green silicon carbide ( GC ...

Henan Yinwang is a high-tech engaged in synthetic diamond and its related ...