Sumitomo Corporation has announced that is has obtained Japan's first certification for a 700-bar (10,000psi) pressurized hydrogen storage system for fuel cell vehicles in collaboration with Suzuki in July 2004. [ more ]

The hydrogen storage system that Sumitomo is using is produced by
Quantum Fuel Systems Technologies Worldwide Inc (QTWW). This is the third country where Quantum hydrogen storage system has been approved for use.