nitric acid, empa eseng ka metsing.
Sehlahisoa sena ke boemo ba mocheso bo sebelisitsoeng bakeng sa PVC. CPVC COPollyers. Ntle le phello ea motho ea acid, e boetse e na le bokhoni ba
anti-oxidation le shidation ea udraviolet, e ntle e ntle, thepa ea motlakase e nang le motlakase le ea pele ea motlakase