It is therefore normal. It's unfortunate that the seller failed to mention that it wasn't Certify. Conclusion: The vacuum cleaner and vendor are both good. Make your own judgment. Its benefits The vacuum cleaner completes all tasks that are required of it. It helps maintain things tidy and clean on a daily basis. He won't fare much better if you let him into a filthy, dusty apartment! The Chinese translation is one drawback. Be prepared for the application to send you to *er and for you to lose all contact with the vacuum cleaner.