Yokor is aluminium hinged window manufacturer in China. We also offer aluminium casement window, awning windows, folding door and aluminum railing system. We have 10 years in making aluminium hinged window and hinged doors, choose material upon customer demands. Our hinged windows and doors are ISO 9001 certified. We are OEM of European standard noise and heat insulated aluminium doors and windows. We are in Shanghai, reliable aluminium hinged window and hinged door supplier, welcome.