求翻译：驻厂代表根据需要直接到炼油产品质检室领取产品质量合格证。是什么意思？

Mill representatives as necessary quality of refined oil products directly to the room to receive product quality certification.

In accordance with the on-site representatives need to be direct to the refined oil product quality inspection room product quality certification.

The product quality certificate must pass through the inspector, verify the human, authorizes the human three levels of verifications, and signs or caps the seal, in which inspector: Signs by the quality inspector, verifies the human: Caps two level of unit quality testing department to be in charge

In-factory representative directly to the refined oil products quality control room as necessary to obtain quality certification.

In-factory representative directly to the refined oil products quality control room as necessary to obtain quality certification.