No computer training certificate is "official", it is only used to prove that an organization has trained you, so it is entirely possible to issue "Zhang San's computer training certificate" and "Li Si's computer training certificate", but whether the enterprise recognizes your certificate is another matter. For example, two people apply for a position, one with "Zhang San's computer training certificate" and the other with "Cisco's computer training certificate". The answer is almost certainly Cisco. The reason is very simple. Cisco has a reputation and status, a large market share and high credibility. That's it, there is no official, only the market.