What is the difference between black material and white material in Xiamen Yujing photoelectric quality control department?

The color of black material and white material in Xiamen Yujing Photoelectric Quality Control Department is different. Because Xiamen Yujing Photoelectric Quality Control Department divides polyurethane foaming materials into black materials and white materials, the so-called black material is isocyanate, which is particularly dark in color and mostly brownish yellow viscous liquid. The so-called white material The so-called white material refers to the mixture of polyether, that is, the mixture of polyol, catalyst, flame retardant and foaming agent, which is very light in color, mostly light brown or light yellow. Therefore, the color of black material and white material in Xiamen Yujing Photoelectric Quality Control Department is different.