求翻译：服务供应商要有专门的承包商维修备件仓，用于存放维修备件良品和损件，并建立备件实物卡记录备件出入库情况；是什么意思？

Service providers have specialized contractor maintenance spare parts warehouse, used for storage of maintenance and loss of yield pieces of spare parts, spare parts and build parts of a physical card records storage conditions;

Service providers should have specialized maintenance spare parts warehouse, the contractors used to store maintenance spare parts Liang pin and wear parts, spare parts and the establishment in kind spare parts access library card records;

The service supplier must have the special contractor to service the spare parts warehouse, uses in depositing the service spare parts good and damages, and establishes the spare parts card recording spare parts in kind to leave the warehousing situation;

Service provider to have a specialized contractor maintenance spare parts warehouse, where good maintenance spare parts and wearing parts, spare parts and spare parts established physical card record for lead;

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