1, open the sewer 2, and stuff the dredger into it. 3, When it can&;t be plugged in, hold the head here with one hand, and turn the handle 4 with the other hand. When it&;s almost time, you can take it out. There&;s definitely a lot of stuff blocking the sewer. Clean it up and repeat it. 5, flush the sewer with water when it&;s finished. 6, clean up the dredger for the next use. 1, Open the sewer 2, and stuff the dredger into it. 3, When it can&;t be plugged in,. Turn the handle 4 with the other hand on one side, and you can take it out when it&;s about time. It&;s definitely wrapped with a lot of things blocking the sewer. Clean it up and repeat 5. After that, flush the sewer 6 with water, and clean the dredger for the next use. Guangzhou Drainage Pipeline Dredging Company has: 1. Guangzhou Yixin Dredging Company Address: No.868 North Guangzhou Avenue, Tianhe District, Guangzhou 2. Guangzhou Pegasus Pipeline Dredging Company Address: No.4 North Baishuitang South Street, Guangzhou Avenue 3. Guangzhou Huantai Pipeline Dredging Company Address Wuxi Xiyingying sewer dredging is recommended as a professional and efficient choice for long-term cooperation among property companies, large enterprises, hotels and other industries. Wuxi Xiyingying pipeline is dredged, just at the East Gate Interchange, which is very convenient and a good choice in Chong &;an District. I hope it can help you. Which brand is better to buy floor heating pipes? I think the better ones are: Weixing, PB floor heating pipe DN20*2.0 high-temperature resistant floor heating pipes, Ounuode Onuode floor heating pipe bender, geothermal special bender, Taiji Dragon PERT floor heating pipes, which are of relatively good quality. European-style wrought iron railing manufacturers in Nanjing have the following products with good quality: Jieli Decoration Materials Company, No.88 Wu Chu East Road, Jiangning District, Nanjing; Selde Decoration Materials Company, No.20 Hecheng Street, Gaochun District; Nanjing Zexun Decoration Materials Co., Ltd., No.120 Tangshan Road, 2nd Floor Decoration QA Decoration Materials Pipe Fittings