The company was formerly the petrochemical research institute of changling refining branch of China petrochemical corporation, and is one of the three national FCC research and development centers for catalysts and additives.

Changlian research institute assists Beijing academy of stone sciences in the technical development of FCC oil refining catalysts, and provides technical guidance for the industrial production of refinery catalysts in changling catalyst plant.

Changlian research institute set up three production departments, the first set of early production equipment.

We have started the small-scale production and sales of CGH series activator, caf-19 type catalytic cracking slurry scale inhibitor, CMP type catalytic cracking metal passivation agent, CT type series dechlorination agent, adhesive inhibitor and other products.

800 tons/year fixed bed mercaptan catalyst production plant was built and put into operation;

TSH - 1 fixed bed mercaptan catalyst, DSH series mercaptan catalyst production.

Changlian research institute engaged in catalytic cracking catalyst research technical force restructuring into yueyang sansheng chemical co., LTD.

In April of the same year, the research and development of losa-1 light olefin assistant catalyst for increasing yield (propylene assistant for increasing yield) was successful, and the industrial application was successfully completed in no. 1 catalytic unit of changling branch of sinopec, and it was officially put on the market.The research and development of LOSA type propylene additive for increasing production successfully broke the long-term market monopoly of similar foreign products in China. Yueyang sciensun chemical co., ltd. became the first FCC device producing propylene additive for increasing production in China.

LOSA type to increase propylene additives in sinopec changling branch, golmud, petrochemical, jinan branch, luoyang petrochemical, jiujiang petrochemical, Qingdao branch, hainan refining, the north sea branch, yangzi petrochemical, yangzhou petrochemical, zhenhai refining, qingjiang petrochemical, jinshan petrochemical, gaoqiao petrochemical, jinling petrochemical, hangzhou, yangzhou, taizhou, fujian petrochemical, wuhan petrochemical, jingmen branch joint petrochemical refining enterprises successful application, etc. Yueyang sciensun has grown into a long-term stable supplier of sinopec systems.