Optical Brightener OB...

Qingshan chemical industry is a factory with 13 years experiences,which specialised in producing and marketing various types of fluorescence whitening agents . For easy reference, you can visit our we...

Our company specialize in the production of series Fluorescent brighteners and Chemical auxiliaries, such as fluorescent brightener CPS, MST, 4BK, DMS, SWN, OB, OB-1, CBS that used in textile, plastic...