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On March 17, the price of waste paper increased by up to 50 yuan/ton a
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On May 13, TDI commodity index was 76.90, chlorinated paraffin commodi
On March 21, the commodity index of white carbon black was 105.86, the
On May 18, the polymerized MDI market in North China fell steadilyto
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On March 19, the TDI commodity index was 58.38, the chlorinated paraff
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