Manufacturers of sewage treatment equipment are: 1. Weifang Haoyu Environmental Protection Equipment Co., Ltd. Main products: hospital sewage treatment equipment, domestic sewage treatment equipment, washing sewage treatment equipment, aquaculture sewage treatment equipment, slaughter sewage treatment equipment. Address: SME Industrial Park, Shanwang Town, Linqu County, Weifang City, Shandong Province. 2. Weifang Yulong Environmental Protection Technology Co., Ltd. Main products: medical sewage treatment equipment, domestic sewage treatment equipment, washing sewage treatment equipment, dental clinic sewage treatment equipment and plastic surgery hospital sewage treatment equipment. Address: No.9 Dongzhen Road, Dongcheng Street, Linqu County, Weifang City, Shandong Province. Established on February 25th, 20 19. 3. Shandong Shengruiyuan Environmental Protection Equipment Co., Ltd. Main products: ozone disinfection equipment, chlorine dioxide disinfection equipment, hospital sewage treatment equipment, domestic sewage treatment equipment and washing plant sewage treatment equipment. Address: Kaiyuan Street, Hanting District, Weifang. 202 1 was established in February 1. 4. The main products of Shandong Guichang Environmental Protection Technology Co., Ltd.: hospital sewage treatment equipment, rural domestic sewage treatment equipment, comprehensive sewage treatment equipment, buried sewage treatment equipment and washing plant sewage treatment equipment. Address: Hengxin Capital, Weifang Hanting. 202 1 was established on June 8.