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Beihai Huihuang Langjie Environmental Protection Technology Group Corperation

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		DPF(Diesel Particulate Filter) - Jun, 21 2007 The diesel particulate filter is able to filter above 80% carbon smoke particulate .For practical application, it would be a great help to solve the problem of air pollution in city. Basic working principle :If the DPF is coated with noble metal

		Product Type of rare-earth complex catalyst - Jun, 21 2007 The rare-earth elements (REE) are the elements Sc (scandium) Y (yttrium) and the 15 lanthanide elements with atomic numbers 57 through 71, namely, La (lanthanum), Ce (cerium), Pr (praseodymium), Nd (neodymium), Pm (promethium), Sm (samarium), Eu (eur

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