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MANUFACTURE OF TWO-POINT WELDED COUPLING SECTION, PARTICULARLY, MANUFACTURE OF CURRENT PULL-IN SECTION OF BAR,FOIL AND BAR MOLD, WHICH IS PRESSURE-SEALED IN HARD GLASS ORSILICA GLASS AND HAS HIGH MELTING POINT
MANUFACTURE OF TWO-POINT WELDED COUPLING SECTION, PARTICULARLY, MANUFACTURE OF CURRENT PULL-IN SECTION OF BAR,FOIL AND BAR MOLD, WHICH IS PRESSURE-SEALED IN HARD GLASS ORSILICA GLASS AND HAS HIGH MELTING POINT