join with sb/sth
phrasal verb with join verb uk/dʒɔɪn/ us
to get together with another company, person, or group in order to do something together:
join with sth/sb in doing sth The department store has joined with other local stores in trying to prevent shoplifting.
join with sth/sb to do sth The company is planning to join with a Chinese partner to open joint venture stores in Beijing.