US Trademark Classification US02 Paints and varnishes 混凝土着色剂（002-571） Class 02 混凝土着色剂 002-571 Chinese 混凝土着色剂 English Colorants for concrete Term ID 002-571 Class 02 Type Goods Status Active · added, not since modified (A) Effective date 2020-03-05 Version 11-2020