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    Chemical test

    Background of the project:
    Rail transit is not only the most efficient and environmentally friendly means of transportation for the general public, but also one of the national business cards representing the advanced nature of Chinaí»s rail transit technology. The environmental protection requirements and safety of the rail transit industry are also increasingly strict.
    Main environmental protection requirements for rail transit in China:
    Tie General Technology [2014] No. 50 "Interim Technical Conditions for 350km/h China Standard EMU"

    í˝ 15 items (classes) banned substances

    CFC (CFC)

    Short chain chlorinated paraffin (SCCP)

    Pentachlorophenol and its salts and esterified compounds (PCP)

    Halon - perfluorofluorocarbon

    PentaBDE (Penta-BDE)

    Aromatic salts and their salts: 2-naphthylamine, p-diaminobiphenyl, 4-aminobiphenyl


    OctaBDE (Octa-BDE)

    Halobenzyl toluene: monomethyldibromodiphenylmethane, monomethyldichlorodiphenylmethane, monomethyltetrachlorodiphenylmethane

    Lead-based paint

    Polychlorinated terphenyl (PCT)

    Nonylphenol (NP)


    High concentration of halogen (fluorine, chlorine, bromine, iodine)

    Indophenol ethyl ester (nonylphenol ethoxylate NPEO)












    í˝ 31 items (classes) restricted substances

    Lead and its compounds


    Fluorinated greenhouse gases:

    Cadmium and its compounds

    Volatile Organic Compounds (VOC)

    Hydrofluorocarbon (HFC)

    Mercury and its compounds


    Perfluorocarbon (PFC)

    Arsenic and its compounds

    Artificial Mineral Fiber (MMMF)

    Sulfur hexafluoride (SF6)

    Bismuth and its compounds

    Medium chain chlorinated paraffin (MCCP)


    Hexavalent chromium



    Cobalt chloride

    Organotin compound

    Butyl phthalate (BBP)


    Polyvinyl chloride (PVC)

    Dibutyl phthalate (DBP)

    Talc (Talcum)

    Fumeishuang (TMTD)

    Di(2-ethylhexyl) phthalate (DEHP)

    Antimony trioxide


    Diisodecyl phthalate (DINP)

    Polybrominated biphenyls (PBDE)

    Triphenyl phosphate (TPP)

    Diisodecyl phthalate (DIDP)

    Decabromodiphenyl ether (Deca-BDE)


    Dioctyl phthalate (DNOP)

    Polycyclic aromatic hydrocarbons (PAHS)

    Triazinyl phosphorus oxide

    Diisobutyl phthalate

    Trichlorobenzene (TCB)

    Hydrochlorofluorocarbon (HCFC)

    Dimethyl phthalate

    Polychlorinated biphenyls (PCBs)



    TB/T3139-2006 locomotive vehicle interior materials and indoor air harmful substances limited

    í˝ Hazardous substances in indoor air


    Harmful Substance

    Vehicle interior

    Formaldehyde, TVOC

    í˝ Requirements for hazardous substances in interior materials


    Harmful Substance

    Structural materials

    Formaldehyde emission

    Decorative material

    Vinyl chloride monomer

    Soluble heavy metals lead and cadmium, TVOC


    Free formaldehyde, benzene, toluene + xylene, toluene diisocyanate, TVOC

    Free formaldehyde, benzene, toluene + xylene, TVOC


    TVOC, benzene, toluene + xylene, free toluene diisocyanate, soluble heavy metals (color limit paint) lead, cadmium, chromium and mercury

    TVOC, free formaldehyde

    rubber products

    Soluble heavy metals lead and cadmium, TVOC


    Formaldehyde content


    TVOC, formaldehyde, styrene, 4-phenylcyclohexene

    Other popular management requirements
    REACH Chemical Registration, Evaluation, Authorization and Restriction Regulations

    Rail transit flame retardant testing service:
    The main cause of fire accidents in rail vehicles is that the decorative parts and electrical components inside and outside the vehicle, such as wallboard, floor, cable and other materials contain a variety of combustible components. The large number of casualties caused by fire accidents is mainly due to the fact that these combustibles release a large amount of smoke and toxic gases while burning, so that passengers can not find a way out of escape and suffocate and die.

    If the fire protection performance of the decorative materials selected on the vehicle is high, the fire will not spread rapidly, giving passengers more escape time, and the number of casualties and property losses will be greatly reduced.

    í˝ Flame retardant fire test of various high-speed rail materials
    í˝Small flame burning test, DIN53438
    í˝Large flame burning test, non-ground material, DIN54837
    í˝ Floor material burning test, DIN4102-14
    í˝Material combustion smoke test, ENISO 5659-2

    Rail transit oil inspection service:
    High-quality fuel can provide greater efficiency for vehicles; in addition to reducing the energy consumption of vehicles, lubricants can also perform well in cooling, sealing and corrosion protection; and in order to cope with the more complex challenges faced by new models, More and more fuel additives that enhance the antiknock, anti-oxidation, anti-static and anti-rust properties of fuels have entered the field of vision.

    Rail transit material inspection services:
    Performance testing of production and incoming quality control of metal materials and components, polymer materials and components, PCB/PCBA and electronic components in the supply chain, including compositional analysis, mechanical properties, thermal properties, electrical properties, physics Performance, chemical properties and microstruct analysis.