Profile: Zhejiang Transfar Whyyon Chemical Co.,Ltd is a fluorescent whitening agent manufacturer. Our products are categorized as paper chemicals, plastic chemicals and textile chemicals. Our VBL series products are used in fluorescent whitening during surface sizing. It is also used together with CMC, PVA, starch and anionic or weak-cationic synthetic sizing agents. Our black DCD dye is applicable to the color blending in the paper pulp sized with rosin or synthetic sizing agent. Our CPS-4T OBA is mainly used in whitening of polyester fabric and it's blends. Our CPS series OBA is mainly be used in whitening of polyester fabric and it's blends.