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pure germanium cone grain

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    Pure Germanium Grain Cone Shape

    The reason for trusting us: First ,with SGS test report , our germanium purity is ≥99.999%; Second , strictly controlled quality inspection to ensure standardization of dimensions with every pieces of cone shape germanium grain; Third , the surface of each germanium grain is multi-layer polished, smooth and bright; Fourth, factory direct supply SGS ≥99.999% germanium 3mm to 8mm for cone shape geramanium grain. Last , the excellent germanium grain manufacturers trusted by buyers .

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