3H INC. established a deep strategic partnership with Midea Land as early as 2015. Over the years, 3H has provided high-quality door and window hardware products and comprehensive pre-sales, in-sales and after-sales services for hundreds of projects in more than ten provinces and cities across the country. The supply volume continues to increase.

The door closer is an important control function of the door control hardware, and it plays a vital role in safety and fire prevention. A door closer with stable performance and complete functions can not only bring safety to people's work and life, but also greatly reduce personal and property losses caused by accidental fires.