Beijing Zijingshi Fine Chemical Technology Co. Ltd. (ZJS) was founded in 1999, mainly engaged in engineering projects, such as carbon dioxide super-critical extraction, environmental protection, sulfonation by gaseous SO₃ (sulfur trioxide), surfactants, and other fields such as technology development, technology transfer, technical consultation, engineering design, technical services.
The company has strong technical force, with complete supporting facilities, such as central laboratory, engineering design company, equipment manufacturing company, installation company. So this company can engage in new product development, complete set of equipment design, equipment manufacturing, installation and construction, technical training, commissioning and other service capabilities.
In the field of sulfur trioxide (SO₃) sulfonation, ZJS has achieved a lot in development of new product, complete plant design, equipment manufacturing, installation, upgrading and technical consulting services, this company has supplied all these items to both domestic and foreign customers.
This company is focused on customers satisfaction, high-quality products with reasonable prices, abide by the contract for the purpose, strive to create customer satisfaction on products, create a pleasant atmosphere of cooperation with our customers.

Technical Service provided by ZJS in the Field of SO₃ Sulfonation

◇Experimental facilities of multifunctional gas-phase membrane SO₃ sulfonation;

◇Design of complete membrane SO₃ sulfonation unit with capacity of 40 kg/h to 8,000 kg/h;

◇Products: Alkylbenzene sulfonic acid (LAS), fatty alcohol ether sulfate (AES), α-olefine sulfonate (AOS), fatty alcohol sulfate (K12), fatty acid methyl ester sulfonate (MES), heavy alkylbenzene sulfonate (HAS), petroleum sulfonate (WPS), sulfonated oil (such as rapeseed oil, castor oil, fish oil) products, naphthalene sulfonates etc and other industrial surfactants. Powdered,or needled K12 forming unit,complete design;

◇Equipment design, equipment manufacturing and equipment updating for sulfonation plants;

◇  Installation and commissioning of sulfonation plant;

◇Programming, configuration, integration of DCS system, MCC system, SIS system, ESD system for sulfonation plant;

◇Development, technical consultation, technical services, technical training of new sulfonation product;

◇Supply of complete small-scale sulfonation unit;

◇Development of sulfonation products for industrial surfactants;

◇Design of alkylation units;