Certifications

zhongzi has passed the ISO9001 Quality Management System Certificate, ISO14001 Environmental Management System Certificate, and OHSAS18001 Occupational Health and Safety Management System of China Classification Society Certification Company; Ceramic fiber products and Rockwool products passed the China Quality Certification Center Energy Conservation Certificate; Ceramic fiber Products passed the Classification Society Certification Center Certificate of Quality of these countries or associates including China, Norway, the United States, France, European Union, Germany and Japan, etc.