The owners of the coal mines had formed an association to protect their interests. 煤矿主们早组织了一个同业公会以保护他们自己的利益。
After the completion of the transformation, the Trade Association losed its market foundation and withdrawed from the stage of history. 在社会主义改造完成之后,同业公会失去其存在的组织基础与市场基础,最终退出了历史舞台。