Company Information Beijing Tianyi Curtain Wall Engineering Co., Ltd is a professional manufacturer for windows and doors in North China. With more than 20 years’ experiences, we specialize in designing and manufacturing all kinds of high -grade windows & doors products for our clients all over the world. Our company has established strategic partnership with several well-known windows and doors system suppliers, such as Schueco Group, Hydro Group and Aluk System. All our suppliers enjoy great reputations in the world, e.g. JMA Extrusion, Pilkington Glass and Roto / Siegenia-Aubi Hardware. Our company has 8 international advanced windows and doors production lines  and 2 curtain wall fabrication lines , with an annual production capacity of 2,000,000 Units. Our annual output is about 100 Million US Dollars. More than 500 buildings have been accomplished in China and other countries, which make Tianyi get more and more good recognition and reputation. Our products have been widely accepted by customers from UK, USA, Saudi Arabia (Mid-East), Canada, Japan, Philippines, Belgium and Australia, etc. We have 2 successfully established 2 subsidiaries in the world, one is Tianyi UK Ltd., and the other is  Tianyi Middle East Branch Co., Ltd. Our R&D department leads us to provide best quality products and reasonable prices. With our excellent products quality, we have obtained ISO9001, ISO14001, OHSAS18001, SGS, CE, AS2047 certificates etc. and our products have passed the industry test in UK. Our research personnel have developed several sets of aluminum window and door system with our own Independent intellectual property rights in UK and Australia.   Suitable for the area with less requirement of heat preservation and heat insulation performance. Sash width ≥300mm;Sash height≤2400mm;Weight of window sash ≤90kg. Side frame, follow the procedure of glue injection after corner crimping; Leading the flow of Sealant through special guide plate, increasing the intensity and Sealing performance of window corner;  Sash frame use plastic corner key connect through inside hexagonal bolt, easy connection, simples construction, less fabrication process, suitable for quantitive production, and it’s very convenient tochange the dimension of sash frame. Can select and use 16-20mm glass,  Beautiful shape, elevation effect concise and bright Using excellent hardware ,flexible opening, tiny opening and closing force, convenient and flexible, no noise. Sealing design with anti-crash piece, prevent shaking piece as an whole, make the installation more convenience.