FITOK is proud to announce that its star product, the 6D Series Tube Fittings, has successfully passed testing against two core hydrogen energy standards – CSA/ANSI HGV 3.1:22 and ISO 19887-1:2024 –and has obtained a Declaration of Compliance issued by the internationally recognized certification body Kiwa. This milestone demonstrates that the FITOK 6D Series Tube Fittings have reached world-class levels of safety, sealing performance, and reliability for hydrogen fuel systems, providing strong assurance for critical components in hydrogen-powered vehicles.




