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  Patent record : Lei Zeyo

  1966 graduated from Xi'an Petroleum Institute in July; 1967-1977 Fushun Petroleum Factory two workshop Technician; 1977-2002 Zhenhai Refining & Chemical Corporation Petrochemical Plant Senior Engi
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  Patent Chuangfa: Fan Cha

  Fan Changhai, in 1962 graduated from the Central-South Institute of mining and mineral processing, distribution in the Ministry of metallurgy Nanchang Non-ferrous Metallurgy Design Institute work, any