Quality Control From the strict testing of materials into the factory began.

质量控制从严格检测进入工厂的原材料开始.

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To co - ordinate the testing of materials as per the contract requirement.

协调材料测试确保符合合同的要求.

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NWT may need to test or direct the testing of materials to determine and render approval.

NWT可能经过试验或者直接检测决定是否无害.

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