The book received government approval or registration, is stored in a file. I'm looking for a book on public key from the file to be printed, and invite the Chairman joined the operation.
Letters to the approval or registration is stored in the file. I find the official book of this file to be printed, and invited to join the Association.
The official letter that have been approved or registered is kept in the file. I find important missive from this file to be printed and invited to join the association.