Here's a checklist for this affair
In order to obtain the import permit, each cat should have microchips implanted. (in my own non-IT/simple words), they implant a chip in the cat. It's a simple procedure, it's like a vaccination or even less that that. They actually inject the chip into the cat. The needle is thicker than the usual vaccination needle and hence it's recommended that the cat be of about 5 to 6 months (as I was told) when they get microchips in. They applied local anaesthesia to the spot where the chip will be injected into, waited for a while for the effect to kick in, and injected the microchip in. I suppose due to the effect of the local anesthesia, my cats could actually sit still for this as compared to their vaccinations. For the welfare of the cats, my post-microchips implant care is identical to my post-vaccination care for them. Additional attention, no bathing, vitamins, be alert with their appetite. So far my cats have done well, better than post-vaccination, none went into fever or loss of appetite as they did with their vaccinations.
I heard that this MAY be a requirement but I gotta do more research on this. If we need to go and another round of trip to the vet =P