There are a number of organizations that offer Vegan Certification for food products; the concept is the same as kosher certification, (though that is the only similarity). Examples would be Vegan.org or vegansociety.org
Do these certifications, in general, or any of them in particular, have any Halachic weight? Can they be trusted to certify, for example, that a processed product is neither dairy nor meaty, or that its ingredients contain no non-kosher animal products, or that a vegetable product contains no insects?