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To implement the Environmental Code of the People’s Republic of China and improve the environmental management registration system for new chemical substances, the General Office of the Ministry of Ecology and Environment (MEE) issued the Notice on Matters Concerning Environmental Management Registration of New Chemical Substances (Huan Ban Gu Ti Han [2026] No. 301) on July 31, 2026. The new policy took effect on August 15, 2026.

Vinyl Silicone Oil is a polydimethylsiloxane with reactive vinyl groups (–CH=CH₂) at the chain ends, also known as Vinyl-Terminated Silicone Fluid. Because its terminal carbon-carbon double bonds can participate in hydrosilylation and other addition reactions, it is one of the most widely used base polymers in addition-cure silicone rubber, liquid silicone rubber (LSR), and RTV silicone systems.

The organic silicone market has entered a recovery and bottom-building phase. In August, the industry’s coordinated production-reduction ratio was adjusted from 60% to 50%, marking an important shift. Monomer producers have maintained stable operations, while DMC and raw silicone rubber spot prices surged amid improved market sentiment, rising to above RMB 13,000/ton and RMB 14,000/ton, respectively. 

Methyl Hydrogen Silicone Fluid, also known as Hydrogen Silicone Oil or Hydrogen-Containing Silicone Fluid, is a functional silicone material containing reactive Si-H bonds. Due to the presence of active silicon-hydrogen groups, Methyl Hydrogen Silicone Fluid can participate in various chemical reactions and plays an important role in silicone rubber crosslinking, waterproofing treatment, surface modification, and silicone material synthesis.