The ultraviolet ray and the sunlight illumination may cause the product embrittlement , this phenomenon from superficial start. Simultaneously the material color also will change yellow, causes the mechanical property to drop suddenly finally. But we may state the performance through in the increase ultraviolet ray stabilizer and the toner effective improvement. The TENLON cable polyether protective covering product oxygen has the very good resistance to smelly the, may satisfy the VDE 472-805 requests.