how long does it take to change to H4 from H1

来源: 于 2008-03-18 19:30:22 [旧帖] [给我悄悄话] 本文已被阅读：次

Hi,

Does anyone know how long it may take the approval to change from H1 to H4? When will H4 take effect? My H1 will expire in 3 three months, Can I request to start H4 three months from now?

Thank you very much.