Meet the national standard: GB / T 17040-1997 (petroleum and petroleum products Determination of sulfur content) GB / T 1 One, the main configuration1, X-ray tube: The import of rhodium target end window-ray tube2, High Voltage Power Supply: Import high performance stability and high voltage power supply3, detector: The ultra-thin beryllium window of Si-PIN detector4, filling helium plant5, ...