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85-99%C Expandable Graphite 180- 300ml/G for Fire Retardant /Natural Flake Graphite Powder, Find Details and Price about Graphite Expandable Graphite from 85-99%C Expandable Graphite 180- 300ml/G for Fire Retardant /Natural Flake Graphite Powder - Qingdao Unirun New Energy Tech Co., Ltd.