What are the colors of the marble trim
I know is the Jiangsu Sanxian Architectural Acoustics System Co., Ltd., there are black, yellow and so on.
Hello, this depends on how you produced, I learned from the Jiangsu Sanxian Architectural Acoustics Systems Co., Ltd., in the production generally need to use resin powder, calcium powder, stabilizer, processing aids, toughening agents, pigments, etc. And other raw materials.
