How big is the big factory you said?
Dandong port includes three ports: Langtou Port (to be abandoned soon), Dadong Port and Haiyang Honggang. Which one are you talking about?
Near Dadonggang, there are Huaneng Power Plant, Dadonggang District, Pasteur Beans (squeezing soybean oil), Bengang Stainless Steel Factory, Fengneng Industry (wind power equipment), Liaoning Nanotechnology (pressure vessel), Song Yuan Chemical Industry, Dandong Shipyard, Dandong Corn Futures, Great Seamless Fuan Copper Industry, some aquatic products and real estate companies.
Further away is qianyang town, which is dominated by garment and textile enterprises, and there is also a large-scale Baishan building material.
Then Dandong City, Shuguang Axle (listed company), Huanghai Automobile, Clone Seal, Bite Electronics, Xintai Power Transmission and Transformation (listed company), Dandong Pharmaceutical Factory, Dandong Chemical Fiber Factory (formerly listed company, now delisted), watch industry, instruments and meters, etc.