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0173 - Shanghai's Industries Achieve New Success In Technical Innovation. A...Front

Shanghai's Industries Achieve New Success In Technical Innovation. An automatic watch cleaning device has been developed through the concerted efforts of the Shanghai Organic Chemistry Research Institute and the Whangpoo District Clock and Watch Company. Photo shows researchers and watch makers examining the performance of the cleaning device.

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0172 - Horizontal grinder designed by workers and technician of No. 2 machi...Back

0174 - Shanghai's Industries Achieve New Success In Technical Innovation. A...Back

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Front	Yes
Place
Year	1975

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0173 - Shanghai's Industries Achieve New Success In Technical Innovation. A...Front

Image details

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