HEAT SINK / EXCHANGER. IT IS A RECTANGULAR METAL PLATE WITH TWO THREADED HOLES AND TWO UNTHREADED HOLES. IT REDUCES HEAT FROM AN ELECTRICAL COMPONENT AND IS SHAPED FOR USE IN A POWER CONVERTER. THE THREADED HOLES ARE IN A SPECIFIC LOCATION SO THAT THE ARTICLE CAN BE PRECISELY ATTACHED TO THE PRINTED CIRCUIT BOARD. THE UNTHREADED HOLES ARE ALSO IN A SPECIFIC LOCATION AND CAN ACCEPT SELF-TAPPING SCREWS WHICH HELPS TO STABILISE THE ARTICLE ON THE PCB. IT IS MADE OF COPPER WITH AN ALUMINIUM COATING.

GIR 1 & 6. THE TEXT TO NOTES 8504, 8504 90 & 8504 90 90. THE TEXT TO NOTES 8504, 8504 90 & 8504 90 90. THE HSEN TO HEADING 8504.