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purity germanium cone grain

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    Wholesale Germanium Grain Cone Shape

    Factory direct supply SGS ≥99.999% germanium 3mm to 8mm for cone shape geramanium grain. High purity of germanium is better for keep body health balance; Every pieces of germanium grain surface are multi-layer polished and polished, high smooth and high brightness; High quality of gremanium products and good service , achieve cooperation and win-win

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