China (Mainland) 
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carbon black (subtypes are acetylene black, channel black, furnace black, lamp black and thermal black) is a material produced by the incomplete combustion of heavy fcc tar, vegetable oil. carbon black is a form of carbon that has a high activated carbon. it is dissimilar to pah (polycyclic aromatic hydrocarbon) content. however, carbon black is widely used as a model compound for diesel soot for diesel oxidation experiments.[1]carbon black is mainly used as a reinforcing filler in pigment.[2]
the current group 2b)".[3] short-term exposure to high concentrations of carbon black dust may produce discomfort to the