· Henan Zhongcheng Machinery Co, Ltd Is a Mining Machinery Manufacture That Produces Large and MediumSized Crushers, Sand Making Machine, Mineral Separating Machines, Forming RD, Production and Sales Into an Integral System. Our Company Is Loed in The Zhengzhou, Henan Provincial Capital, Covering 60, 000 Squre Meters. There Are Over 320 Workers, 40 Technicists, 12 .