... window & door 1.high quality,competitive price 2.sound insulation ,heat insulation, damp proof Specification:1) This 70 series wood ... broken frame sections do good insulation performance, making the series applicable to diversified climate conditions across China. 4) The ... hung, bottom-hung, tilt & turn, tilting sliding. 1.Material: Top-grade aluminium sections in 6063-T5, cladding with solid wood ...