According to Aigou.com's inquiry, the curtains on the second and third floors of Yiwu Mall opposite the light industry market are made of cloth, hemp, yarn, aluminum, sawdust and metal materials, which have the functions of shading, heat insulation and adjusting indoor light. Materials are cotton gauze, polyester cloth, polyester-cotton blended fabric, cotton-linen blended fabric and non-woven fabric, which shows that Xi 'an curtain wholesale is cheap and good in Yiwu Mall.