Dandong High-tech Industrial Development Zone (hereinafter referred to as "Dandong High-tech Industrial Development Zone") was established on 20 12 and 12. Based on the Liaoning (Dandong) Environmental Protection Industrial Park completed in 2009, it is developed and constructed with a planned area of 15.86 square kilometers. On April 20 14, it was approved as a provincial-level high-tech industrial development zone, and the planning is now being adjusted. Dandong High-tech Zone starts from Dandong Airport in the east, Liulin River in the west, Langdong Road in the south and National Highway 20/kloc-0 in the north. Initially formed, with the bio-based nylon 56 fiber project as the leader, focusing on the protection of textile industry and new material industry, focusing on the development of functional textile industries such as military protection, safety protection, outdoor protection and medical protection, and new materials such as buildings and nano-materials, so as to make the upstream superior and strengthen the terminal, base itself on the northeast and radiate the whole country.