XXX (company name) meets the newest technologies and production quality control. All products are manufactured in accordance with the international standards that is confirmed by the availability of international certificates. Since 2010 XXX is a holder of the YYY certificate. It is also certificated to GOST.
Could you tell me if there are any other ways to say "is confirmed by the availability of", please?
I am a bit confused.
I am not a teacher.