... : plain (oil ). black SUYU specialize in producing rail fastening , rail anchors are our main products , Rail anchor are ... g/pc) 50Kg60Si2MnA80070LB60Si2MnA80085LB60Si2MnA80090/91LB60Si2MnA800As a leading manufacturer of rail fastening in China , SUYU also can produce many other railway fasteners ... certificates and have got the production license of China’s Railway Ministry on railway products. We have ...