About Diyang

Established in Feb 2003 and headquartered in Shanghai, Shanghai Diyang Chemical operates marketing branches in Hong Kong, Singapore, Xi’an, Qingdao and Guangzhou. We deliver premium sustainable, eco-friendly catalysts, ion exchange resins and process technical solutions to domestic petrochemical and chemical manufacturers, driving the sustainable growth of China’s chemical sector.

As a leading domestic service provider in the catalyst sector, Shanghai Diyang Chemical boasts abundant practical application cases, a comprehensive product portfolio and full-cycle after-sales services, serving clients covering numerous segmented chemical industries in China. It supplies monometallic and multi-component composite catalysts based on a wide range of metals including titanium, nickel, aluminum, copper, zinc, manganese, palladium, rhodium and gold, which are extensively deployed across diverse petrochemical and chemical processes.

In collaboration with renowned domestic and international technology developers, the enterprise delivers high-efficiency, low-energy-consumption and sustainable core process technologies for new chemical project construction. Its technology lineup includes, but is not limited to: gas-liquid-solid three-phase loop reaction technology, phosgene and phosgenation technology, specialized fluorochemical reaction technology, world-class surfactant manufacturing technology, PO/TBA/MTBE production processes, 1,2-propanediol technology, EOA/MEOA synthesis technology, eco-friendly bio-based ethylene and vinyl acetate production technology, as well as green manufacturing technologies for 1,4-butanediol (BDO) and its derivatives.

The company’s ion exchange resins are fabricated via suspension polymerization or spray granulation with styrene (or acrylic acid)-divinylbenzene copolymer backbones, featuring high exchange capacity, superior mechanical strength and strong anti-fouling performance. The product range covers four major categories: strong-acid, weak-acid, strong-base and weak-base resins, available in factory forms of Na-type, H-type, Cl-type and free-base type. These resins are widely applied in industrial wastewater treatment, desalination, catalytic synthesis and product separation & purification within the chemical industry, such as impurity removal for BDO, chlor-alkali and PDH feedstock, catalytic esterification and etherification for MMA and MTBE production, and demineralized water preparation.