99.999% Germanium Products 1,HENGXIANG 2,Material: Germanium 3,Color: Silver-grey 4,Surface finish: 80/60 99.999% Pure Germanium Products 1), Material : metal germanium 2), Specification: Φ3mm;Φ4mm;Φ5mm;Φ6mm;Φ7mm; Φ8mm; Φ10mm;Φ12mm.3), Surface finish : 80/604), Purity : 99.999%5), Package : blister plate (100PCS/layer) 6), Specification: In accordance with the drawing, you can provide us your ...