Shandong CongHui Mechanical and Electrical Equipment Group Co., Ltd. is a professional manufacturer of D1, D2 pressure vessels, heat exchangers, heat exchange units, shell and tube heat exchangers, plate heat exchangers, evaporators, condensers, water treatment equipment, water Processing technology research and development, water treatment engineering design and consulting; industrial wastewater and sewage treatment equipment, auxiliary boiler sales; demineralized water equipment manufacturing, sales, installation and commissioning; environmental protection project...