38220090 under HS Code DIAGNOSTIC OR LABORATORY REAGENTS ON A BACKING, PREPARED DIAGNOSTIC OR LABORATORY REAGENTS WHETHER OR NOT ON A BACKING, OTHER THAN THOSE OF HEADING 3002 OR 3006; CERTIFIED REFERENCE MATERIALS DIAGNOSTIC OR LABORATORY REAGENTS ON A BACKING, PREPARED DIAGNOSTIC OR LABORATORY REAGENTS WHETHER OR NOT ON A BACKING, OTHER THAN THOSE OF HEADING 3002 OR 3006; CERTIFIED REFERENCE MATERIALS: OTHER, 85444299 under HS Code INSULATED (INCLUDING ENAMELLED OR ANODISED) WIRE, CABLE (INCLUDING CO-AXIAL CABLE) AND OTHER INSULATED ELECTRIC CONDUCTORS, WHETHER OR NOT FITTED WITH CONNECTORS; OPTICAL FIBRE CABLES, MADE UP OF INDIVIDUALLY SHEATHED FIBRES, WHETHER OR NOT ASSEMBLED WITH ELECTRIC CONDUCTORS OR FITTED WITH CONNECTORS - OTHER ELECTRIC CONDUCTORS, FOR A VOLTAGE NOT EXCEEDING 1000 V -- FITTED WITH CONNECTORS --- OTHER : ----OTHER, and 84624910 under HS Code MACHINE-TOOLS (INCLUDING PRESSES) FOR WORKING METAL BY FORGING, HAMMERING OR DIE-STAMPING; MACHINE-TOOLS (INCLUDING PRESSES) FOR WORKING METAL BY BENDING, FOLDING, STRAIGHTENING, FLATTENING, SHEARING, PUNCHING OR NOTCHING; PRESSES FOR WORKING METAL OR METAL CARBIDES, NOT SPECIFIED ABOVE- PUNCHING OR NOTCHING MACHINES (INCLUDING PRESSES), INCLUDING COMBINED PUNCHING AND SHEARING MACHINES: OTHER: PUNCHING MACHINES (INCLUDING TURRET) were the top imported HS Codes by INTERNATIONAL SCIENCE AND TECHNOLOGY SERVICE JOINT STOCK COMPANY in 2021.