Hey Shan,
Are you sure on that bit about chemical use clearance? I translated that one as asking the repairer to use Fluorine Resin Clearcoat.. my direct tranlsation reads:
"Caution when repairing paintwork.
This vehicle is a Fluorine Resin vehicle, hence when conducting paint repairs please ensure that Fluorine Resin Clearcoat is used. If you are unsure, please consult with the nearest Nissan involved sales company."
Splitting hairs... but hey, you were quicker than me.