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Yuntianhua Co., Ltd. and Do-Fluoride Chemicals Co., Ltd. signed a joint venture agreement on 27 November 2020 to establish Yunnan Fluorine-Phosphorus Electronics Technology Co., Ltd. with registered capital of CNY 300 million, to build production facilities for anhydrous hydrofluoric acid, white carbon black, lithium hexafluorophosphate, and electronic-grade hydrofluoric acid.