Take bus No.7 or 15 at North Station and get off at Friendship Hotel, and take bus No.0/0 opposite to Zhangerdianzi (if you don't know, ask the driver where to get off at the destination opposite to White Cat). You can see Chenggou Bridge when you get off the bus. It's about 200 meters across the bridge on the left.
In addition, Dongzhou District is within the city, but Fushun North Chemical Company belongs to the urban-rural fringe.
If you take a taxi, it's about 25-30 yuan from North Station to Fushun North Chemical Company.