Hi,
I would like to share my experience with Kamai elevators, we have this elevator in our apartment for past 2 years.
First year was not a worry as we had Gaurantee, second year we got the Labour AMC done. The elevator quality is the worst, you will start getting issue from second year and you will have to replace many parts. The trick is that KAMAI company charges you 2 to 3 times the market price for the spare parts and they do not co-operate to install the parts if you buy the parts outside.
Their service is good, but as I mentioned the parts are of cheap quality and it fails quick, you will be spending lot of money to maintain this elevator, the company makes money by over charging for the spare parts, they rip you off by charging more. They also program your controller so that no other elevator company can take over the maintenance of your elevator, they will take you for granted and you will have no choice but to stick to them and pay what they ask.
Their business model is of printer - cartridge company, they sell you printer for cheap and over charge you for ink cartridge, and issue here is that you have to buy the cartridge from them only, they leave you no choices.
Suggest you to go with some local elevator manufacturers, who can source local spares for you, it becomes cheaper to maintain your elevator then . make your choice wisely.