Certificate & Honor
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| Patent certificate of utility model 1 | Patent certificate of utility model 2 | Patent certificate of utility model 3 | Patent certificate of utility model 4 |
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| External washing tower system | High purity carbon dioxide equipment | Patent certificate of utility model 5 | Power off protection device for expander |
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| ISO quality management system certificate | Occupational health and safety management system certificate | Occupational health and safety management system | Quality management system |
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| CE CERTIFICATE | Overpressure protection device for liquid oxygen pump | Record registration form | Customs Registration certificate |
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| High and new technology Enterprise certificate | The business license |