Foshan Corestone Building Materials Co., Ltd is a professional manufacturer of aluminum and uPVC windows and doors with more than 12 years' experience and the area of factory 4000 square meters. We are specialize in integrating research, design, manufacture and sales of all aluminum windows and doors, bifold doors, sliding doors, PVC windows and doors, casement windows, curtain walls. Because of strictly material chosen, unique styles and excellent quality, our products are warmly popular at domestic and foreign market and exported to USA, Britain, Bahamas, North America, German, Southeast Asia and Other countries. Our products have enjoyed a good reputation for the quality, durability. All of them with good wind pressure, air tightness and sound insulation that adopted in hundreds of projects, including commercial & residential, house, villas, school, hotel, hospital, offices and more from all over the world. You don't need to worry about the installation. We have lots of professional engineering staff and skilled installation master can accurately solve all problems. We are ready to assist you to choose the right windows and doors. Looking forward to hearing from you and we will reply you in 24 hours. Providing good quality doors and windows to you. This is the meaning of our existence.