I was wondering if anyone else is having difficulties with their suppliers attesting to RoHS compliance on a lot by lot basis. Some suppliers have informed us that they will not do this, but will offer a declaration of conformance on an annual basis. I know that this is weak, but would it be acceptable? We could add some language regarding any changes that might occur during the year, but it is still not as good as lot by lot certification. All of our products have CE marking through self-certification. Thoughts?