All the raw material comes from qualified supplier.

所有原材料均来自于优质供应商。

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Now, we have been the qualified supplier of the above mentioned companies.

我公司已成为上述企业合格的供应商。

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Source qualified supplier & sub-contractor, and carry out supplier evaluation.

寻找有资质的供应商和承包商，并开展供应商评估工作。

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