On August 20, 2018, Jiangsu torchi delivered and completed the EPC Construction of Kelin new energy cold box test bench in September 2019. The new type of cold box is a purification and liquefaction integrated cold box, which is jointly developed by Shanghai Jiaotong University and Kelin new energy. After five years, it is a new product that subverts the industry. Before the new cold box is put on the market, it needs to test various indexes and performance of liquefaction and purification. The test bench is independently developed by Jiangsu tuochi, which is the first set of cold box test bench in China. The successful development of this bench fills in the domestic gap and wins the high praise of Shanghai Jiaotong University and the owner.