Bengbu Zhongheng Second-hand Car Trading Market Co., Ltd. The second-hand car is registered with the public security traffic management organ, and served before reaching the scrapping standard stipulated by the state or during the actual economic life. Bengbu zhongheng used car market co., ltd is the largest used car market in Bengbu. The concept of OTC market (OTC market), also known as OTC market and OTC market, refers to outside the stock exchange.