ACS Inc.
1084 South Laurel Rd.
London, Kentucky 40744
USA
this is documents I asked my father-in-law send from china directly:
1) I-94 form
2) Photocopy of passport stamp entering in China
3) Boarding ticket
4) Photocopy of Credit Card Authorization Form of purchasing airline tickets for my parents-in-law.
5) Photocopy of passport, visa and other supporting documents.