COMPANY PROFILE：Shanghai Sanchuan Environmetal Potection Technology Co.,LTD. established in 2014, is a professional manufacturer engaged in the research, development, production, sale and service of environmental products and solutions, our products include explosion- proof industrial vacuum cleaners, explosion-proof dust collectors, central vacuums, high-power vacuums, pneumatic vacuums, central dust collectors, polishing and grinding dust collector tables, smoke and dust pu...