Tangshan Longquan Chemical Auxiliary Co., Ltd, established in 1988, is the former Langfang Longquan Flux Co., Ltd. The factory is located in Nanpu economic development zone, Tangshan City, Hebei Province, one of the seven largest chemical industry parks in China. Constructed in 2015 and put into production in 2016 with 20 million Yuan registered capital. The factory area covers 100 Mus, in which the completed phase I project covers 80 Mus. A total of 120 employees, including 18 technicians reaching the title of senior engineers.