Absorb seconded personnel to join the party and fill in the application form for joining the party, which is the same as that of regular employees of the unit. If there is a formal secondment order or official letter involving the work of the seconded unit, it should be filled in according to the contents of the transfer order or official letter; If there is no transfer order or letter of introduction, it can be left blank and can be reflected in the volunteer letter and the opinion of the party introducer.