Wanjia Hiseng Building Material Co., Ltd has years of experience in manufacturing, quality control and trade. With 20,000 square meter factory, and 100 workers , we have learnt how to do a good quality windows and doors. Our main product is aluminium window, aluminium door, UPVC window, UPVC door, Aluminium Curtain Wall.After exporting many windows and doors to international customers Like South Africa, South America. The Middle East, and Africa, we have learn t how to assist customers to design , manufacture and install windows and doors for their house, hotel, hospital, office, villa, factory, super market school, and AirportWith advanced importing equipment, our product meet the highest quality requirements as stipulated in I S O 9 0 0 1, B V, T U V, S G S Australia A S 2 0 4 7and European C E certification guidelines and our stringent quality control system.After sales, We will always provide you good service, like how to fix hardware and how to install windows and doors. We will gladly evaluate your needs and recommend the system that is best for your requirements. We can solve all the problems of your doors and windows in one stop. From beginning to end, we look to respect our clients by assisting in a courteous, professional manner.In one word, more experience, more professional, better quality, competitive price, and durable service