Guidance for Industry Good Importer Practices Draft Guidance.
This draft guidance document, when finalized, will represent the current thinking of multiple U.S. government agencies including the Environmental Protection Agency on this topic.

REACH — Registration, Evaluation, Authorisation and Restriction of Chemical substances is a European Community Regulation that became effective on June 1, 2007.  It replaces a number of fragmented European directives and regulations within a single system. 

The Hazardous Waste Manifest Has Changed
and the Compliance Assistance Platform has prepared several resources that will inform you of the changes.

Also visit The Border Center: Exporting Chemicals and Products from China to the U.S.