The full name of the RoHS Directive is The Restriction of the use of Certain Hazardous Substances in Electrical and Electronic Equipment. In 2002, the European Union first proposed the RoHS concept - a directive to restrict the use of hazardous substances in electrical and electronic products (EEE).

Directive 2002/95/EC or RoHS: On July 21, 2011, the European Union restricted the use of lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr6+), polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) in the production process of certain electrical and electronic equipment sold in the European Union.

Directive 2011/65/EU or RoHS 2: On January 2, 2013, the EU restricted lead (Pb), mercury (Hg), cadmium (Cd), hexavalent chromium (Cr VI), polybrominated biphenyls (PBB), polybrominated diphenyl ethers (PBDE), di(2-ethylhexyl) phthalate (DEHP), benzyl butyl phthalate (BBP), dibutyl phthalate (DBP), diisobutyl phthalate (DIBP) (referred to as phthalate 4P).

In addition to the EU, other countries and regions around the world such as China, California, Singapore, India, the United Arab Emirates, Turkey, etc. have also successively issued RoHS control requirements, making RoHS the most basic entry threshold for electronic and electrical products to enter the global market.