From December 27, 2021 to December 28, 2021, the 23rd China International Door and Window Facades Technology Exchange Seminar was held in Shanghai, China. 18 supporting units, 32 organizers, 48 co-organizers and nearly 300 people from all over the country of China in the door and window facades industry attended the seminar.

At the conference, the 2021 "China's top 100 brands of doors and windows for home" brand was awarded, and HiHaus doors and windows, with good brand reputation and excellent service system, stood out among many domestic door and window brands and won the title,  once again showing the brand value and status of HiHaus windows and doors.