亲启 meaning in Chinese

personal
◇亲启信件 private and confidential

Three envelopes, all marked private and confidential, had come through the mailroom .
三封标有“密件亲启”的信件送到了邮件收发室。
Three outward-bound envelopes, all marked private and confidential, had come through the mailroom .
三封标明“密件亲启”的外寄信件送到了邮件收发室。
Establish orgnaization of aseismatic leader providing disaster relief , main leader is opened in person catch , specific handle affairs personnel wants to fulfil
成立抗震救灾领导机构，主要领导亲启抓，具体办事人员要落实。