0235 - Veteran worker Li Chang-mao (left) of Tientsin No. 2 Woolen Textile ...Front
Veteran worker Li Chang-mao (left) of Tientsin No. 2 Woolen Textile Mill learned to analyze the performance of machines with Chairman Mao's philosophical thinking and solved the difficult problem of snapping of woolen yarn on warping frames.
Image details
| Front | Yes |
|---|---|
| Place | |
| Year | 1971 |
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