http://xxhardware.en.ecplaza.net X.X. Steel Fittings Co.,Ltd. was founded in 1996 .We are one of members of the China Construction Metal Structure Association (CCMSA) and is a state designated company for producing accessories for profile doors and windows.Our company obtained ISO9001 quality management standard certification in 2001.We are a professional maker on hardware for doors and windows. We look forward to offering you our best products and service. We hope we will build a bright future together with you. Choose X.X.choose perfection. Our products include: handle,hinge,hardware of windows,hardware of doors,lock,roller,transmissiom bar,tilt&turn of pvc window,tile&turn of aluminium window