East of G20 1 Zhen 'an District, Dandong City. Eco-industrial park is the third generation industrial park developed after economic and technological development zone and high-tech industrial development zone. The address of Tongxing Town Eco-industrial Park in Jian 'an District of Dandong City is located in the east of G20 1 in Zhen 'an District of Dandong City. Dandong is an important border port in Liaoning Province, a central city in Liaodong approved by the State Council and an important port city in Liaoning coastal economic belt.