阐述了UL认证对工厂及产品的跟踪服务制度，介绍了UL跟踪服务的类别。
The rules and classification of UL follow-up service to factory and products has been elucidated.
总而言之，此项论述涵盖面过于宽泛，囊括了所有类别的工厂工作，并且，它还基于极成问题的逻辑推理。
In summary, the argument is too broadly based in covering all types of factory work, and it is based on problematic reasoning.
附加部分财产，工厂和设备，不能放置在上述任何类别。
Additional components of property, plant, and equipment that cannot be placed in any of the foregoing categories.
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