The production line of annual capacity of 35,000 ton petroleum sulphonates (PS) is currently being installed in the Crude Refining Chemical Company, Daqing, Petrochina, continuing the successful test of 15,000 ton/a on 21st, July, 2013. The whole set of equipment being installed in situ was designed by Beijing Zijingshi Fine Chemical Company Ltd. Experts from Zijingshi are present to supervise the production line assembly. It is the largest domestic production line based on the most advanced gas phase-film SO3 sulphonation technique.
