What is the material of the white cloth in front of the lampshade of photographic flash?

LZ should be talking about soft cloth and soft paper. Generally speaking, any material that can soften light will do. Soft and light cloth is usually nylon or nylon plus velvet. Soft glossy paper can be made of sulfuric acid paper or butter paper. I'm talking about that kind of lamp, that is, the kind to be erected. I hope it will be helpful to LZ, and I must remember to adopt it ~ ~