... type of PXJ-sand maker:Made by Zhengzhou Ruiyuan Machinery Co.,Ltd ,The PXJ serious sand maker is new type and high ... operation, it is widely used in production line of sand-making, cement, , refractory material and metallurgic. It also be called the ... 280-310 315Zhengzhou Ruiyuan Machinery Co.,Ltd is taking the leading position in the technology of crusher, sand making machine, jaw crusher and ...