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Compilation of Five Small Innovation Achievements of Industrial Workers of Tianshan Mining Company(Chinese Edition) - Softcover

CHEN CHUANG JU , TANG YU , WEI YU HONG , CHEN CHUANG JU , TANG YU , WEI YU HONG , ZHANG SAI JUN BIAN

 
9787502089498: Compilation of Five Small Innovation Achievements of Industrial Workers of Tianshan Mining Company(Chinese Edition)

Synopsis

Language:Chinese.paperback.Pub Date:2021-12-01.publisher:Coal Industry Press.description:Paperback. Pub Date: 2021-12-01 Pages: 226 Language: Chinese Publisher: Coal Industry Press 18 invention patents. utility model patents. etc. All of these achievements have high gold content. strong practicability. and obvious safety and economic ben

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