Wanjia Hiseng Building Material Co. Ltd has years of experience in manufacturing, quality control and trade. With 20000 square meter factory, and 100 workers we have learnt how to do a good quality windows and doors. ,brOur main product is aluminium window> aluminium door UPVC window, UPVC door Aluminium Curtain Wall.,brAfter 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 Airportbr