Trade city. According to relevant data, the specific address of pvc pipe Hefei in AD is located in K District 14 Street, Jingshang Trade City. Hefei is an ancient and young city. The ancient Chaohu Lake basin centered on Hefei is one of the important birthplaces of Chinese civilization. In the history of more than 3000 years, Hefei has been governed by counties for more than 2 100 years.