... insulation and warm-keeping properties; the items' capability of windowand door are better; after preparing the vacancy glass, it will ... third class (GB/T7108)We also can supply aluminum folding door style,open-out casement style,open-in casement style,sliding ... ,inwardtilt-turn style,outward tilt-turn style ,push-and-pull lift style,lift sliding door or according to your samples and drawings....