nvironmental protection and crushing order to meet the needs of the times, Zhengzhou ChangLei machinery mill to absorb domestic and foreign advanced technology, combined with the new PCX efficient finely machine out of the domestic circumstances of the (sand making machine) boarded the stage of environmental protection and crushing equipment.Chang Lei heavy industry leading research after the decision. The time of producing 20 tons of the third generation of sand making machine crushing control system as follows: 1 the transformation with the programmable controller (PLC) instead of the original relay order to meet the needs of the times, Zhengzhou ChangLei machinery mill to absorb domestic and foreign advanced technology, combined with the new PCX efficient finely machine out of the domestic circumstances of the (sand making machine) boarded the stage of environmental protection and crushing equipment.Chang Lei heavy industry leading research after the decision. The time of producing 20 tons of the third generation of sand making machine crushing control system as follows: 1 the transformation with the programmable controller (PLC) instead of the original relay this paper, by the Zhengzhou ChangLei Machinery Co Ltd Electronic Commerce Department Yu Zhiyuan edited the original, without permission, do not reprint!.In order to meet the needs of the times, Zhengzhou ChangLei machinery mill to absorb domestic and foreign advanced technology, combined with the new PCX efficient finely machine out of the domestic circumstances of the (sand making machine) boarded the stage of environmental protection and crushing equipment.Chang Lei heavy industry leading research after the decision. The time of producing 20 tons of the third generation of sand making machine crushing control system as follows: 1 the transformation with the programmable controller (PLC) instead of the original relay this paper, by the Zhengzhou ChangLei Machinery Co Ltd Electronic Commerce Department Yu Zhiyuan edited the original, without permission, do not reprint!.The basis and scope two, content of feasibility study 1 feasibility study work, the construction of the project proposed by the background, necessity of construction and economic order to meet the needs of the times, Zhengzhou ChangLei machinery mill to absorb domestic and foreign advanced technology, combined with the new PCX efficient finely machine out of the domestic circumstances of the (sand making machine) boarded the stage of environmental protection and crushing equipment.Chang Lei heavy industry leading research after the decision. The time of producing 20 tons of the third generation of sand making machine crushing control system as follows: 1 the transformation with the programmable controller (PLC) instead of the original relay this paper, by the Zhengzhou ChangLei Machinery Co Ltd Electronic Commerce Department Yu Zhiyuan edited the original, without permission, do not reprint!.The basis and scope two, content of feasibility study 1 feasibility study work, the construction of the project proposed by the background, necessity of construction and economic significance.Before considering the crusher equipment price, still want to consider crusher word, as the saying goes: gold silver cup as the reputation of ordinary people, the good reputation of the phase of crusher