[Lead-Acid Battery Industry Chain Circular Information] According to Pang Mingduo, Deputy General Manager of Tianneng Group Guizhou Energy Technology Co., Ltd., "Approximately 400 mt of secondary lead is efficiently circulated between the two enterprises daily, saving over 40 million yuan in annual transportation costs. The refined lead products meet 70% of the company's raw material demand." Tianneng Company utilizes more than 20,000 marketing outlets across five surrounding provinces to collect waste batteries, which are then centrally processed by the upstream enterprise Guizhou Qizhen Industrial Group Co., Ltd.