Shanghai 35 th cotton mill. According to information from official website, the factory with the largest number of workers in Chongming is Shanghai No.35 Cotton Mill. Chongming has 5,000 workers and is located at No.0/78 Gongnong Road, Baozhen Town, Chongming County, Shanghai. Shanghai No.35 Cotton Mill, established in June1September 989 18, belongs to the textile industry, and its business scope includes spinning, spinning, weaving and knitting grey cloth.