... surface treatment: spraying coating, laminated/cladding/wood imitation.... white Pvc profilePerformance:1) Heat insulation, sound insulation, corrosion-resistance, aging- resistance ... upper suspending and circular arc 3) It is bluish white, lucid and lively, and gives people pure, fresh and ... can let the clients have no worries 7) Good light and heat stability: after the strict force aging testing, the ...