Our quality certificate is made valid by means of official seal.
我们的质量证书盖了公章方为有效。
Certificate of acceptance of contract product quality signed by both parties in two copies.
由双方签署的合同产品考核验收合格证书一式两份。
Certificate of acceptance of contract product quality signed by both parties in two copies.
由双方签署的合同产品考核验收合格证书一式两份。
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