On October 20, 2015, a delegation of 24 from Zhuzhou Electric Locomotive Pneumatic Equipment Co., Ltd. went to Longgang, Shenzhen by train and visited Shenzhen Zhanggonghe Precision Hardware Co., Ltd. It also focused on the production workshop, on-site management and quality error prevention and fool proof measures of Zhanggonghe, and also understood the production efficiency and inspection methods of the company's employees in detail. Both sides agreed that this is an opportunity to learn from and exchange with each other, and also an opportunity to work together for win-win cooperation.