If possible take a small sample of the high gloss white plastic finish you want, and again take plenty of pictures.
I know you can get it , my neighbor in Hisaronu had hers done last year. Regarding your other queries there is a
Forum member "Inspector" who runs a business offering all the services it sounds that you will need this year. He
is well recommended and apparently his charges are reasonable. More importantly, all his information and advice
is accurate and up to date. There are of course others offering a similar service. Good Luck.
