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Sgj Vacuum Hardware Components SUS 304/ SUS316 Con Flat Flange/ Metal Parts/ Vacuum Tight Seal/ Vacuum Tube Flange, Find Details and Price about Uhv CF Flanges ISO Flanges from Sgj Vacuum Hardware Components SUS 304/ SUS316 Con Flat Flange/ Metal Parts/ Vacuum Tight Seal/ Vacuum Tube Flange - Shaanxi Sgj International Co., Ltd.