... style engineered for school ,house ,factory 1.profile:aluminium alloy6063-T5,powder coating (or anodizing) ,,wall ... -18mmAluminium windows & doors ,curtain wall ,roller shutter,partition ,fixed shutter,handrailSuperior heat insulation & preservation performance With thermal ... outdoor noise effectively.After surface processing, the window and door have strong weatherability, ageing resistance,and ...