Certification+11 Dec 20252 min read
Confirm your HVACR qualifications: personnel competence certification at COCH under PN-EN ISO 22712
Are F-gas permits alone enough on a rapidly changing market? PN-EN ISO 22712 replaces previous standards and stresses natural and flammable refrigerants. See how to obtain an international competence certificate at COCH at one of four proficiency levels.
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