PERM and I-140 file time

my perm was approved today, how long can i wait to file I-140, I heared of that the I-140 has to be filed within 45 days after the perm was approved, is that true?

Thanks all of you, specific thanks to Xiaobaitu!

所有跟帖： 

• 140可以馬上遞, 485要等排期 -thanks4urhelp- ♀ (0 bytes) () 07/25/2006 postreply 16:31:37

• 回複：140可以馬上遞, 485要等排期 -xiaodong88- ♀ (90 bytes) () 07/25/2006 postreply 16:39:02

• 原則上可以,但這樣會損失點時間,不如現在遞140 -thanks4urhelp- ♀ (0 bytes) () 07/25/2006 postreply 16:46:20

• 回複：原則上可以,但這樣會損失點時間,不如現在遞140 -xiaodong88- ♀ (20 bytes) () 07/25/2006 postreply 16:54:07

• Check Out Immigration Wiki for the Basic :) -fzw- ♂ (43 bytes) () 07/25/2006 postreply 17:54:43