Seller provides Full Set of Proof of Product (POP).

卖方提供全套的供货证明。

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SELLER R will provide Proof of Product(POP) document from bank Buyer's bank within five(5) banking days after DLC receiked.

卖方收到买方银行信用证（DLC）后的五个银行工作日内通过银行发出供货能力证明文件（POP） 。

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Seller's Bank (Bullion) Officer to provide Proof of Product (Confirmation to sell Au-document) and verify Buyer's capability with Buyer's Bank (Bullion) Officer.

卖方银行官员须提供产品证明(售黄金贵金属的确认函)并与买方银行官员核实买方的采购能力。

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Some see it as reversing the burden of proof on businesses that want to launch a product, use a chemical or adopt a new practice.

ECONOMIST: The price of prudence

The company is raising money to manufacture the product in Groton, NY, to show proof of concept.

FORBES: New Angel Network for B Corps Holds a Pitch Forum

There are, he points out, some signs of progress, as well as proof that including older viewers in a product advertisement doesn't have to alienate younger viewers.

FORBES: Magazine Article