8老师，我下周回国，带我爸妈去广州面谈。发现要求带无犯罪证明。他们的是2年前的。办新的公正我怕时间有点儿来不及了。查了一下，这是网上关于无犯罪证明的要求。用的词是police certificate. 不是公证。听起来可以在公安局开个无犯罪证明，带去广州面谈就可以了。这样省了公证的时间。我看了几个以前的帖子，有人提到过，领馆要求公安局的无犯罪证明的元件。可不可以直接用的公安局证明？按说他们应该懂中文的。
谢谢。
Police Certificates
Send a photocopy of your police certificate(s) to NVC.
• Bring the original police certificate(s) plus a photocopy to your visa interview at the U.S. Embassy or Consulate.
Note: Present and former residents of the United States do NOT need to submit any U.S. police certificates.
Important: Police certificates expire after one year, unless the certificate was issued from your country of previous residence and you have not returned there since the police certificate was issued. If at the time of your interview the following three items are all true, you must bring a new police certificate to your visa interview:
• You are more than 16 years old;
• The police certificate submitted to NVC was obtained more than one year ago; and
• You still live in the country that issued the certificate.