Organization for Technical Conformity


Years of experience

0 +

Issued Certificates

Certificate of accreditation BAS №6 OCC from 27.10.2022 and date of first accreditation 30.10.2007

Certificate of accreditation BAS №23 ОССП from 26.01.2023

Accredited Certification body of:

EN ISO 3834 Quality requirements for fusion welding of metallic materials

welding icon

EN ISO 9001 Quality Management Systems (QMS)

EN ISO 14001 Environmental Management Systems (EMS)

EN ISO 22000 Food Safety Management Systems (FSMS)

EN ISO 27001 Information Technology. Information Security Management Systems (ISMS)

EN ISO 39001 Road Traffic Safety Management Systems (RTS)

ISO 45001 Occupational Health and Safety Management Systems (OHSMS)

EN ISO 50001 Energy Management Systems (EnMS)

The activity is carried out by highly qualified specialists, lecturers, and internationally recognized auditors who are members of the IRCA (International Register of Certificated Auditors).

ОТС has active participation in international seminars in Bulgaria and abroad and keep close contacts with professionals from Germany, Denmark, Slovakia, Czech Republic, Poland, Belgium and other countries in EU.

ОТС is a member of ACABCP – Association of Conformity Assessment Bodies of Construction Products.

OTC is a member of REDCA – Radio Equipment Directive Compliance Association.

Contact us:

Contact us to learn about our certification services and how we can help your company achieve success with management, product, and welding certifications.


+359 2 980 04 18

+ 359 888 13 98 94


Bulgaria, Sofia 1000, 12, Hristo Belchev str.