HANFILTER has obtained various certifications such as the ISO9001 quality management system,ISO14001 environment management system and GCCA product quality and safety. Our products not only comply with all conceivable certifications - we even help write the rules: Our experts are part of standards committees such as ISO China group. This way, we know exactly what is associated with which quality requirements.We are also a member of the Chinese compressed air technology specialist group and represent the specialist interests of the GB in this area (compressors, compressed air technology).Furthermore, we continuously invest in the certification of our company and products. In addition to general certificates, we hold almost all pressure vessel certifications required worldwide. products strictly adhere to various national and international standards, showcasing advanced technology. Currently, we have secured more than 30 national technical patents.