请问专家:
1.163A 州担保可否自助办理,是否一定需要通过代理才可以办?
2.做的是贸易生意,是否不符合“Business role
You have not been engaged in a business where the provision of professional, technical, or trade services took up more than half your time.”的规定,没有资格办理163A?
3.如果在贸易之外还经营部分维修服务业务,是否可以弥补上面的不足?
4.去澳洲后,发现设定的生意不能顺利进行开展,是否可以更改生意?