silicone roll mills coal mining vietnam
silicone roll mills coal mining vietnam . china15 2008/12/22 Shanghai. Shenhua Ningmei starts construction for POM project in Ningxia On Dec. 15, 2008, Shenghua Ningxia Coal Industry Group (Shenhua Ningmei) started construction for its coal based POM(polyoxymethylene) project in Ningdong Energy Chemical Base, Yinchuan, Ningxia.