How long does it take for environmental management system certification (ISO400 1)?

Are you asking about the renewal period of the certificate (three years) or the time interval from applying for certification to getting the certificate?

You apply for certification today, confirm it two weeks later, and seal the contract.

I will find an auditor for you in two to four weeks, and then I will start the first phase of the audit in two to four weeks.

After the first-stage review is completed, wait 1 to 2 weeks for formal review.

After the formal audit, the certification company will conduct a technical audit, and the certificate will be issued one month later.

It will take about 2 months to get it, and this speed is still ok.

Of course, there are also fast and cheap ones, so don't think about the effect or anything.