According to a non-governmental organization, polyurethane formulations containing CFC-11 are being illegally widely supplied in China.
EIA, a London-based civil society organization, filed the allegations in June this year after contacting a Chinese company that promoted polyurethane rigid polyurethane foam systems on Internet or commercial websites.
EIA said it contacted 25 factories or foam production companies, 21 of which responded. In those 21 homes, 18 companies in 10 provinces admitted to using CFC-11 in foam insulation, mainly for building panels and Spray foam.
After seeing a report in the scientific journal Nature, which is increasingly high in the concentration of Freon-11 in the East Asian region, EIA conducted a survey of East Asia.
According to the EIA report, Chinese traders believe that up to 70% of domestic foaming agents use CFC-11. Others say that once CFC-11 is mixed with polyols, it can be exported without permission.
In this way, some companies in other countries that have signed the Montreal Protocol may inadvertently use CFC-11 in their formulations.
Illegal trade seems to be booming due to its price. One interviewee said: 'The standard foaming system from international suppliers is not cheap enough. If you want to use their environmentally friendly foaming agent, you You will have to buy other ingredients from them... this will be very different from the price you bought from us.'
The EIA suggested that the Chinese government should conduct intelligence-based investigations to combat illegal activities nationwide.
The attack should be seized, arrested and prosecuted. EIA said that China should also adopt some policies to implement construction projects in the supply chain and impose legal obligations.
The China Plastics Processing Industry Association issued a statement pledging to support relevant national authorities in combating the production, sale and use of illicit flone, and to cooperate with law enforcement agencies.