Pab neeg Longfian tuaj koom 2019 kev kho mob Dusseldorf Exhibition thaum 18-21th 2019, Longfian lub rooj muag khoom No. 16M48-2.
Rau cov khoom pov thawj no, Longfian yuav tso tawm peb cov kev tsim tawm tshiab: portable pulse flow oxygen concentrator, hypoxic lub tshuab hluav taws xob kuj tseem ua kom pom hauv kev nthuav qhia hauv thawj zaug. Tos txais txhua tus phooj ywg tuaj ncig xyuas lub rooj muag khoom.
