Yes. Laidun Doors and Windows is a brand applied for by Zhang Liang on December 7, 2016. It is headquartered in Hebei and is a high-end system door and window brand focusing on the design, development and production of doors and windows. It is a high-end system door and window brand. Its logo is a three-color shield logo with black, red and yellow as the main body. The whole is centered on the word "shield", and its abstract design highlights the protective nature of the shield, which is intended to express the origin. High-performance system doors and windows from German brand origin. Leiden security door is the authentic Panpan door, and the authentic Panpan door is a door style under the Leiden brand. Originated from Germany, creating a Chinese brand. Laidun doors and windows follow the technical standards of energy saving, safety and reliability in German design, strictly adhere to every process, and strive for excellence.