Gren Innovation is a partner of Ambrogio Sanelli who was founded in 1864 in Premana, a picturesque village nestled in the Italian Alps. Known for their exceptional craftsmanship, Ambrogio Sanelli produces a range of high-quality and unique professional knives.
Naniwa, based in Osaka, Japan, has been crafting premium abrasives for over 60 years. Their whetstones are designed for both industrial and home use, offering unparalleled performance and durability.