Yanji, with a research focus to the extreme, was established in 2018 as a highly customized brand for doors and windows under Yumherald Corporation. Propose a new "door and window customization" centered around "highly customized, unique, and out of nothing", with consumer door and window needs as the innovative starting point, scenario based applications as the conceptual core, a complete product line as the product support, and rich technological accumulation as the service support. It comprehensively leads the iteration of customized door and window products and services, born according to changes and made according to needs.
