They are employed by construction glass installation contractors, retail service and repair shops and glass fabrication shops, or they may be self-employed.
他们受雇于建筑玻璃安装承包商，零售服务和维修店和玻璃加工车间，或者有可能成为自雇人士。
Service shall include the labor and parts required to repair product which has become defective through normal wear and usage. this does not include consumable and their installation.
维修包括维修正常磨损及使用损坏的产品所需要的劳务以及配件，但不包括消耗品及它们的安装。
Monolithic construction design, easy installation, examination and repair, shorter stopproduct time, smaller filter element, less abrasion failure and longevity of service.
一体式设计，安装检修方便，减少停产时间；缩短过滤元件，减少磨损破漏，延长使用寿命；
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