Thank you 雪瑩媽咪 for your detail information. I have try the chair with my daugther yesterday in central. But I cannot find the one in book fair today, because I do not know which booth. And I think that the one in the book fair is too expensive for me if it cost more than $3000. My daughter like the one in central, but I have some hesitation. First, the chair seems to be too small for my daugther, she is already 10 years old. The size of the seat will be too small for her after one or two years. Secondly, I agree with polarbb's husband, it cannot adjust the angle of the back, it can only adjust the height.
雪瑩媽咪, where can I find the photo and the size of tc 501. Is it better than the one show in central? If it is better, I prefer to wait for one month.
I also went to the Ocean Terminal to see the one said by the other BK mom (like two leaves shape), but my daughter says her back not feel quite comfortable when she sit on it. So I will not consider this one.
After I have seen all the post here, I don't want to bear the risk to buy in Kwoloon Tong if no other BK mom have try it and say it is reliable.