bro Ruslan, these fog lights of yours are from Corolla 121's right? And if I can remember you have a Luxel grade corolla (122)!!!!!!!!! Machan an original fog light set would cost around 20,000 bucks according to you but I know a Taiwanese original type these fog light set cost around 6,000 - 7,000 rs max. I have bought this Taiwanese fog set few years back from a shop in Darley road, Rumal Motors. (please moderators remove this name if its against forum rules) and fitted that to our previous 121 corolla. They looked perfect. These lights are identical to the original lights and easily fits the lights bays on the buffer nicely. Mounting brackets are also given with the lights.
Im sorry bro I have no idea who can clean these lights. But I suggested as above was because if its not worthy for you to repair for a higher cost, then you can buy a taiwanese fog light set and get that fitted for a worthy price as I told. Its the same shape, crystal as the originals. No one can say they are after markets.
Good Luck!!!!