Zhejiang Free Trade Zone Violet Trade Co., Ltd.--Zhejiang Violet|Violet Trade|2-Bromobiphenyl|2,4-Dibromobiphenyl|2-Bromodibenzothiophene|4-Bromophenoxybenzene|2-chloro-4-(biphenyl-3-yl)-6-phenyl-1,3,5-triazine