They are employed in maintenance departments of factories, plants and similar establishments, by plumbing contractors, or they may be self-employed.
他们受雇于工厂，厂房及类似机构的维修部门，也可受雇于水暖承包商，或者他们可能是自营企业。
This unit group includes plumbing and other pipefitting trade contractors who own and operate their own businesses.
此单元组包括管道和其他管道安装行业承包商，其拥有并经营自己的企业。
This unit group includes plumbing and other pipefitting trade contractors who own and operate their own businesses.
此单元组包括管道和其他管道安装行业承包商，其拥有并经营自己的企业。
应用推荐