According to the EU WEEE & RoHS directive requirements, domestic qualified third-party testing organization is the product according to the material to split in different materials for the detection of harmful substances, respectively. In general: · metal material to be tested four kinds of harmful metals such as (Cd Cd / Pb Pb / Hg Hg / Cr6 + hexavalent chromium) · plastic material in addition to checking the four outer needed to detect harmful heavy metals brominated flame retardants (polybrominated biphenyls PBB / polybrominated two stupid ether PBDE) · simultaneously on different materials packaging material also needs were tested packaging materials of heavy metals (94/62 / EEC) The following is the upper limit of the concentration in the RoHS of six hazardous substances specified: cadmium : less than 100ppm Lead: less than 1000ppm 3500ppm aluminum alloy steel is less than less than less than 4000ppm copper alloy 40000ppm Mercury: less than 1000ppm Hexavalent chromium: less than 1000ppm limit toxic substances: · heavy metals: -Lead lead; -Mercury mercury; -Cadmium cadmium; -Chromium (VI), hexavalent chromium, brominated flame retardants certain: PBBs -Polybrominated biphenyls (PBB's); PBDE -Polybrominated diphenyl ethers (PBDE's) highest limit indicators are: Cadmium: 0.01 % (100ppm); · lead, mercury, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers:. 0.1% (1000ppm) six hazardous substances RoHS for all production processes and raw materials may contain six hazardous substances in electrical electronic products, including: white appliances, such as refrigerators, leather lead tester, washing machines, microwave ovens, air conditioners, vacuum cleaners, water heaters, etc., lead tester, black appliances, shoes and lead tester, such as audio, video products , lead tester quotes, DVD, CD, TV receivers, IT products, digital products, communication products; power tools, electric and electronic toys, medical electrical equipment. Examples of solder, glass, PVC stabilizer 2. mercury (Hg) (Mercury) use of the material:: Example 1. Lead (Pb) use of the substance thermostats, sensors, switches and relays, bulbs 3. Cadmium (Cd Examples of switches, springs, connectors, casing and PCB, contacts battery 4. hexavalent chromium (Cr 6+) use of the material::) examples of the use of the substance metal anti-corrosion coating 5. polybrominated biphenyls (PBB) use Examples of flame retardants, PCB, connectors, plastic shell 6 polybrominated diphenyl ethers (PBDE) use of the material:: Examples of the material flame retardants, PCB, connectors, plastic shoe lead tester _ lead tester _ lead detector is supplied by Shenzhen Huayi Technology Co., Ltd. Four Seas. Shenzhen Huayi Technology Co., Ltd. Four Seas (huayi-universal.com) (www.huayi-univerasl.com) strong, credible, analytical instruments in Shenzhen, Guangdong and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi into the brilliant universal and you work for a better future!