国治同志:我支局应相邻单位的再三要求,在其与他人签订的经济合同上盖了邮政日戳。事后得知,我支局成了保证人,要对相邻单位履行经济合同承担担保责任。请问:是否因为该经济合同盖了我支局的邮政日戳,我支局就得承担连带责任?莫知 Comrade Guo Zhi: At the repeated request of our neighboring units, our branch office has put in place the postal stamp on the economic contract it has signed with others. Later learned that my branch became a guarantor, to assume responsibility for the economic performance of neighboring units to undertake the guarantee. Excuse me: Is it because the economic contract has set up the postal stamp of my branch office, and my branch office has to bear joint and several liability?