1. In 1986,Website:http://www.special-gas.com, Wuxi Sacredequine Gas Co.,Ltd was established. 2. In 1998 with 10 years from 15 people to develop a team of 345 people, while the company completed the technical reserves, talent pool, the company laid a solid foundation. 3. In 2003 the company's first bottle of acetylene gas off the assembly line, the development has become one of the largest acetylene producers. 4. In 2009 the company set up the first six branches in China, the main products include acetylene gas, special gases, rare gases and high purity electronic gas 5. In 2012 the company set up the 15th branch in China, becoming the leader in domestic gas producers, operating more than 150 kinds of gas products. 6. 2016 Shanghai Zhang Nan Chemical Co., Ltd. was established, marking the company officially entered the international market for international customers with a variety of gas products, and provide the core competitiveness of the market price Shanghai Zhang Nan Chemic