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Description:Origin: China Certification:ISO9001 Payment Terms:T/T Other Price Terms: FOB ShangHai Features: 1) The sliding window of energy-efficient material, absorbing the quintessence of the energy-conserving window technology from America and Europe 2) The window material is high, firm, safe and durable in intensity 3) Rational design, good heat-insulation, sound-insulation 4) Can be installed with the double-deck glass of 5 + 9 + 5