Dear sir or madam, We are a professional aluminum extruder in Guangzhou China, we have a branch of fabrication and installation for windows and doors, curtain wall, we can fabricate as our own system as well as custom design. We have excellent machinery processing and consultant. We have certified in ISO9001:2000 and we did lots of project in China mainland,Taiwan as well as overseas. Products: Curtain wall, Aluminum windows, Aluminum Doors/ chair / tubes/ ladder/ heat-sink/ handrails we usually quote based on the shop drawing, profile color, type of glass and the quantity. The more accurate info. you offer, the more accurate and reasonable price we can give you. If anything we might be helpful, please let we know. Thanks. We are looking forward to your early reply. Best regards, Guangdong Galuminium Aluminum Group Co., Ltd Haby Sales manager Tel: 8620-86161838-8510 Fax: 8620-86161763 MSN:Habyliuhuan@hotmail.com Skype:Habyliuhuan Email:alu-group.haby@163.com