RoHS stands for Restriction of Hazardous Substances Directive. This directive restricts the use of six hazardous materials in the manufacture of various types of electronic and electrical equipment. This six materials are:
RoHS was adopted by European Union in 2003 and took effective on 1st July 2006. It is closely linked with the Waste Electrical and Electronic Equipment Directive (WEEE) 2002/96/EC which sets collection, recycling and recovery targets for electrical goods and is part of a legislative initiative to solve the problem of huge amounts of toxic e-waste. Any product fails to comply RoHS will not be allowed to enter Europe.