Hi. I have a chinese girlfriend, from hainan, china.
I would like to arrange for her to come to singapore to be with me and my family.
How do I apply for a visa for her, and what is the maximum period that she can stay in singapore ?

I have also heard that the visa is approved according to merit. Does it mean that there is a chance that the visa application will be rejected ? What should I do if it is being rejected ?
Please help. Thanks in advance