and Instructions Management (2007), and the Regulations of Recycling and Treatment of Waste Electrical and Electronic Products (2009). With the reference of more than 20 standards, a complete legal framework is under establishment, which covers acts, regulations, ordinances, and standards \[[@B3-ijerph-16-03083],[@B33-ijerph-16-03083]\].

At the same time, China signed several international conventions related to POPs management, such as London Guidelines for the Exchange of Information on Chemicals in International Trade (1989), Convention on safety in use of chemicals at work (1990), Basel Convention on the Control of Transboundary Movements of Hazardous Wastes and Their Disposal (1989), Rotterdam Convention on the Prior Informed Consent Procedure for Certain Hazardous Chemicals and Pesticides in International Trade (1998), Stockholm Convention on Persistent Organic Pollutants (2011), and International Code of Conduct on the Distribution and Use                                                 Hazardous chemicals: tracking monitoring the status and changes of hazardous chemicals in seawater, sediments, marine organism in contaminated sea areas and adjacent areas, and monitoring the marine functional areas near hazardous chemical pollution incidents to understand the impact of hazardous chemical spills. Determine the specific time and frequency according to the amount and extent of the leakage of hazardous chemicals.                   