Linping welder certificate training center. Linping Welding Certificate Training Center has a welding certificate, but it can only be obtained after training and final examination. Linping District, which belongs to Hangzhou, Zhejiang Province, is located in the south wing of the Yangtze River Delta metropolitan area and the northeast of Hangzhou, with an area of 286 square kilometers. It is connected to Huzhou in the north, Qiantang River in the south, Beijing-Hangzhou Canal in the west and Jiaxing and Haining in the east.