On November 5, 2025, Jiaxing, Zhejiang - Jiaxing United Chemical Co., Ltd. announced that its independently developed "ethylene based silicone oil purification and low molecular weight removal device" has achieved large-scale application, which can increase the purity of ethyl silicone oil to 99.9%, meeting the strict requirements of pharmaceutical, electronic packaging and other fields. The device has been granted a national utility model patent, marking China's entry into the world's top tier of organic silicon purification technology.


Innovative design: solving industry problems
Traditional purification processes, due to insufficient cooling efficiency, are prone to residual low molecular weight impurities, which can affect product stability. Jiaxing United Chemical has innovated through a dynamic heat dissipation system by installing cylinder push rods and moving tables in the distillation tube. The position of the heat dissipation fins is automatically adjusted according to the heat accumulation position, resulting in a 60% increase in purification efficiency. The daily output of a single device reaches 5 tons.


Quality leap: opening up the high-end market
The ethyl silicone oil purified by this device has a volatile substance content of less than 0.1%, which complies with the EU REACH and RoHS environmental regulations. It has passed the drug packaging material standard testing and has become the preferred raw material for pre filled syringe rubber pistons and liquid silicone rubber (LSR) injection molding. The company's general manager revealed, "We have signed long-term supply agreements with multiple multinational pharmaceutical companies, and by 2026, the proportion of high-end products will exceed 70%


Green transformation: a win-win situation of cost reduction and efficiency improvement
The device adopts a closed-loop system, with a steam recovery rate of 95%, which is 30% more energy-efficient than traditional processes. By combining automation control technology, labor costs have been reduced by 50%, and the unit price of the product is 20% lower than imported products. Industry reports show that the market size of ethyl silicone oil in China will reach 4 billion US dollars by 2025, and high-end and green products will become the core competitiveness of enterprises.


Market outlook: With the rapid development of 5G communication, new energy vehicles, biomedicine and other fields, the demand for ethyl silicone oil continues to rise. The technological breakthroughs of Xinyuan Chemical and Jiaxing United Chemical not only promote the upgrading of the industrial chain, but also give China's organic silicon industry an advantage in global competition.