In June 2007, the Norwegian Pollution Control Authority proposed to the World Trade Organization (WTO) that during the production, import, export, and sale of consumer products, the content of harmful substances in each uniform material must not exceed the legal limit. The main purpose of this law is to limit the harm of consumer products to the human body and the environment, as well as the content of harmful substances in waste. Norway's PoHS has more and broader items restricting hazardous substances than the EU RoHS. Almost all consumer products are within its scope of control, with only a few excluded, such as: food, food packaging, fertilizers, medical equipment and cigarettes, as well as transportation Tools, transport fixtures, tires and similar transport accessories. The 18 hazardous substances and limits controlled by PoHS are as follows: Substance name limit (wt%) Substance name limit (wt%) Hexabromocyclododecane (HBCDD) 0.1 Musk xyleneMusk ketone 0.05 Tetrabromobisphenol A (TBBPA) 1 Perfluorooctyl acid (PFOA) and individuals alts and esters of PFOA 0.005 * Medium-chainedChlorinated paraffins,C14-C17 (MCCP) 0.1 DTDMA