THE TANGKU salt fields, situated on Pohai Sea on the north China coast not far from the cities of Peking and Tientsin, is China's biggest. Also ranking first for quantity and quality of output, it...
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THE TANGKU salt fields, situated on Pohai Sea on the north China coast not far from the cities of Peking and Tientsin, is China's biggest. Also ranking first for quantity and quality of output, it...