The company Sani & Testai, founded in 1977, very quickly became the leader in the construction of stainless steel tumblers for tanneries and laboratory. Always active in experimenting new technologies, today it boasts a vast range of products for the tanning industry. Stainless steel tumblers type ST with a diameter from 350 mm to 1600 mm, drums with three compartments for dyeing and tumblers for tanning type ST 1700 and ST 2700 available in three versions (stainless steel support - zinc-plated support - concrete base) are used and appreciated by the more modern tanneries in the world.