Engineering Design Qualification Certificate
China Quality Gold Medal
Certificate of Business
Construction Enterprise Qualification Certificate (1)
Construction Enterprise Qualification Certificate (2)
Construction Enterprise Qualification Certificate (3)
Certificate of Quality Management System
Certificate of Occupational Health and Safety Management System
Certificate of Environmental Management System
Certificate of Honor
Utility Model Authorized Certificate: Gas-liquid two-phase flow uniform device for plate-fin heat exchanger
Utility Model Authorized Certificate: New structure of insulating layer for insulated parts
Utility Model Authorized Certificate: Cryogenic separation device for producing low purity oxygen from air
Utility Model Authorized Certificate: Low Purity Oxygen Production Device with Auxiliary Distillation Column
Utility Model Authorized Certificate: Low Energy Consumption Nitrogen Plant with Refrigeration Cycle
Utility Model Authorized Certificate: Sealing system of cryogenic cold box
Utility Model Authorized Certificate: Air Separation System for Efficient Utilization of LNG Cold Energy
Utility Model Authorized Certificate: Spray nozzle gear transmission mechanism of expander
Utility Model Authorized Certificate: Tangential swirl blocking gas seal for expander
Utility Model Authorized Certificate: Refrigeration System and Liquefaction System of Natural Gas Liquefaction Process
Utility Model Authorized Certificate: Turbine expander
Utility Model Authorized Certificate: Horizontal plate-fin condenser evaporator
Utility Model Authorized Certificate: A LNG Three-Wall Metal Full-Volume Tank
Utility Model Authorized Certificate: A Self-pressurizing Device for LNG Horizontal Welded Insulating Gas Cylinders for Vehicles
Certificate of Invention: Refrigeration System and Liquefaction System of Natural Gas Liquefaction Process
Certificate of Invention: Air separation method using cold energy of liquefied natural gas
Certificate of Invention: A cryogenic separation method and device for producing low purity oxygen from air
Certificate of Invention: Gas-liquid two-phase flow uniform distribution device and gas-liquid two-phase flow mixing method for plate-fin heat exchanger
Utility Model Authorized Certificate: A device for obtaining He-Ne feed gas by air separation with argon
Utility Model Authorized Certificate: A CO Tamping Purification and Liquefaction Device for Oxygen-enriched Combustion Flue Gas
Utility Model Authorized Certificate: A He-Ne Concentration Device
Utility Model Authorized Certificate: A Device for Obtaining He-Ne Raw Gas
Utility Model Authorized Certificate: An Integrated Air Compressor
Utility Model Authorized Certificate: A propane precooling system for natural gas liquefaction
Utility Model Authorized Certificate: High Efficiency Heat Transfer Tube for LNG Vaporizer
Certificate of Invention: A LNG System for Air Conditioning
Certificate of Invention: An Air Separation System for Efficient Utilization of LNG Cold Energy
Certificate of Invention: A Method and Device for Producing Pressure Oxygen by Air Separation
Certificate of Invention: An Air Separation Device and Its Method