Employment of Sun Yugang, 1937–: 天津孫恩吉父子鐵工廠 (設計工程師,兼經理)

 Occupation: id 23833
Organisation
天津孫恩吉父子鐵工廠
Original occupation text
設計工程師兼經理
Range - Start date
1937
 
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Sun, Yugang 孫玉剛 (1907–)
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