Hario

HARIO has been planning, manufacturing and selling heatproof glass since its very inception — and is the only manufacturer with a heatproof glass factory in Japan. Initially, HARIO manufactured and sold laboratory glassware.
In 1948, they began making coffee siphons by taking advantage of the properties of heatproof glass and their refined glass processing techniques. HARIO later expanded into a wide range of popular home products made from various materials.