Plastic

Caused by UV to ABS and PVC

Use hydrogen peroxide (active oxygen) 10%, TAED (bleach) and a source of UV

• Acrylonitrile butadiène styrène — Wikipédia - Jaunissement des plastiques ABS

• Retrobright - Wikipedia - hydrogen peroxide

• Le retrobright, anti jaunissement des consoles - Blog LoisirCreatif.net