90184900 under HS Code INSTRUMENTS AND APPLIANCES USED IN MEDICAL, SURGICAL, DENTAL OR VETERINARY SCIENCES, INCLUDING SCIENTIGRAPHIC APPARATUS, OTHER ELECTROMEDICAL APPARATUS AND SIGHT-TESTING INSTRUMENTS - OTHER INSTRUMENTS AND APPLIANCES, USED IN DENTAL SCIENCES: OTHER and 90138090 under HS Code LIQUID CRYSTAL DEVICES NOT CONSTITUTING ARTICLES PROVIDED FOR MORE SPECIFICALLY IN OTHER HEADINGS; LASERS, OTHER THAN LASER DIODES; OTHER OPTICAL APPLIANCES AND INSTRUMENTS, NOT SPECIFIED OR INCLUDED ELSE WHERE IN THIS CHAPTER - OTHER DEVICES, APPLIANCES AND INSTRUMENTS: OTHER were the top imported HS Codes by 24 SEVEN HEALTH CARE VIETNAM JOINT STOCK COMPANY in 2021.