Optical brighteners are common for white fabrics or printed fabrics with white surface.
Optical brighteners are common for white fabrics or printed fabrics with white surface.
对于白色布料和印为白色表面的布料，用光学增白剂可以常见的。
Optical brighteners are common for white fabrics or printed fabrics with white surface.
对于白色布料和印为白色表面的布料，用光学增白剂可以常见的。