Congratulations to Mr. Wang Jingbao, National Marketing Director and Ms. Wang Ning, Product Manager of Durable Window Industry Co., Ltd., for obtaining the certification of Passive House Designer, Consultant, and Constructor from the Passive House Institute in Germany!
This certification is the world's most authoritative and professional qualification certification for passive house technology, issued by the Passive House Institute (PHI) in Germany. It is an international level certification for building energy-saving technology that every window and door user should actively improve and obtain!!




Durable Window Industry Co., Ltd. has actively encouraged every department to obtain PHI certification and certification in recent years. The company dispatched personnel for training and exams, and through learning, systematically mastered the basics of passive rooms, passive room guidelines, PHPP and DesignPH software applications, passive room wall design, passive room airtightness and non thermal bridge design, passive room ventilation system, passive room testing, on-site supervision and quality assurance, as well as PHI bidding, certification and other knowledge.