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* Clear and bronze anodized

Torsion spring by the special heat treatment and oil

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Double Glazing

foshan aluminum sliding windows price philippines security cost of doors and windows aluminium bifold windows uk on China WDMA bifold * Clear and bronze anodizedProduct Information Product Information Materials lists: Aluminum Profiles 1) 40,45, 50, 55, 60, 70, 80, 90 series aluminum profile. 2) 6063 T5 T6 grade of non thermal break aluminum 3) Customzied aluminum profile Glass 1) Double toughened glass with gap filled with air or argon gas 2) Single toughened glass 3) Double toughened glass will PVB laminate Elements: low e,tinted,reflective & obscure frosted to meet different U value and SHGC Hardware 1)