Determine proper sources of supply for the most reliable and economical purchases.

正确地选择质“优”价“廉”交货及时的供应商.

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Develop adequate and reliable sources of supply.

寻找足够和可靠的供应商.

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We are interested in the possibility of establishing sources of supply crude oil from your country.

我们有意向贵国寻求原油供应来源的可能性.

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