回複：I-130 for parents in China:what other documents are needed

besides my own birth certificate（I can use it for my mother's petition, parents' marriage certificate for my father? The I-130 instructions only mentioned a copy fo these two documents. It didn't say about parents' own birth certificates but other people said they prepared them. Is it necessary? Thanks.
-It is common sense that the applicants (your parents) need to provide their birth certificates for thier GC or immigration visa application.

See "置頂: 老年人辦理綠卡的體會" on this webpage.