pvc windows 1) Fireproof 2) Bristletail resistant 3) Antiseptic 4) Durable 5) Easy to clean 1new style used aluminum windows frame:CertificateCE/SONCAP certificateWindow styleEuropean style; American styleOpening styleSliding, casement, turn-tilt, tilt-sliding, single-hung, double-hung, etc.Specification(size, color,etc.)Different countries have different demands for it; Special shaped windows ...