Dazhong street. According to the information of official website, there is a training institution for disassembling and assembling air conditioners on Qunzhong Avenue in Zhanjiang, which is called National Refrigeration and Air Conditioning Maintenance Department, and its address is located atNo. 188 Qunzhong Avenue in Leizhou City, Zhanjiang City. Zhanjiang, a prefecture-level city in Guangdong Province, formerly known as "Guangzhou Bay" or "Port City", is located at the southernmost tip of Chinese mainland, in the southwest of Guangdong Province, between east longitude109 40 ′ ~10 58 ′ and north latitude 2013 ′.