pp
UK (also p.p.)
由…代签
written abbreviation used to show when someone has signed a document for a person who is not available to sign it
I hope to hear from you soon. Yours sincerely, Chris Smith, pp Rebecca Collings. 望你尽快回信。你真诚的克里斯•史密斯，丽贝卡•科林斯代签。