yes I would like to thanks to zirhk3355 for your investigation. you are so sweet !! and for bullet thanks for give me some feefback on the quotation. I think I will think 10 times if I want to sign up with them.
I called them, they said being registered to HDB. But i don't know with the other projects that they had completed, maybe they used the other contractor license to do that. their quotation is in average. I will pm you their quotation.