| http://www.w3.org/ns/prov#value | - According to, Martin Wolf, a product director with the company, many factors were considered in the decision not to seek certification, including the company???s own standards, how consumers would interpret the presence of the NPA seal on Seventh Generation products, and the cost to certify. ???Displaying the NPA seal might suggest Seventh Generation is at parity with other products that display t
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