What does RoHS stand for? 

The meaning of ROHS is as follows: 1. ROHS: Abbreviation of Restriction of Hazardous Substances, "Directive on Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment" (referred to as "RoHS Directive") 2. As explained on the first floor 3. RoHS Directive restricts the use of the following Six types of hazardous substances 1. Lead (Pb) Examples of the use of this substance: solder, glass, PVC stabilizer 2. Mercury (Hg) (mercury) Examples of the use of this substance: thermostats, sensors, switches and relays, light bulbs 3 Cadmium (Cd) Examples of the use of this substance: switches, springs, connectors, housings and PCBs, contacts, batteries 4. Hexavalent chromium (Cr 6+) Examples of the use of this substance: metals with corrosion coating 5. Polybrominated biphenyls (PBB) Examples of using this substance: flame retardant, PCB, connector, plastic shell 6. Polybrominated diphenyl ether (PBDE) Examples of using this substance: flame retardant, PCB, connector, plastic shell 4. RoHS The upper limit concentration of the six harmful substances in the regulation: Cadmium: less than 100ppm Lead: less than 1000ppm in steel alloy less than 3500ppm in aluminum alloy less than 4000ppm in copper alloy less than 40,000ppm mercury: less than 1000ppm hexavalent chromium: less than 1000ppm5, ROHS certification scope of EU 27 member states: France, Federal Republic of Germany, Italy, Netherlands, Belgium, Luxembourg, United Kingdom, Denmark, Ireland, Greece, Spain, Portugal, Austria, Sweden, Finland, Cyprus, Hungary, Czech Republic, Estonia, Latvia, Lithuania, Malta, Poland, Slovakia, Slovenia, Bulgaria, Romania. [Edit this paragraph] RoHS specifically relates to those products. 6. RoHS targets all electrical and electronic products that may contain the above six hazardous substances in the production process and raw materials, mainly including: white goods, such as refrigerators, washing machines, microwave ovens, air conditioners, vacuum cleaners , Water heaters, etc.; black home appliances, such as audio, video products, DVD, CD, TV receivers, IT products, digital products, communication products, etc.; electric tools, electric electronic toys, medical electrical equipment.