The largest outdoor vertical green wall material in the northwest

Quick answer：

The largest outdoor vertical green wall in the northwest of China is typically a significant project that involves extensive use of greenery and advanced horticultural technologies to create a vertical garden. These walls are designed to improve air quality, provide insulation, and enhance the aesthetic of urban environments. They are often constructed using a variety of materials such as bamboo, metal frames, and planters, with specific plant species selected for their ability to thrive in vertical environments and contribute to the wall's overall functionality and beauty.