Eisaku Noro Company, Ltd. is a yarn manufacturer located in the Aichi Prefecture of Japan.
It produces yarns for handcrafting under the Noro brand name, as well as machine yarns for textile production using the Eisaku Noro label. The company was founded over forty years ago by Eisaku Noro. The handcrafting yarns in particular are well known for their vivid colors and combinations of diverse fiber types. They differ from a number of other manufactured yarns in the industry by having lengthier spans of color in the runs, causing distinctive striping patterns, as well as being partially spun by hand versus being produced completely by machines.
All animal fibers that are used in the yarns come from certified organic farms, from international sources such as Australia, the Falkland Islands and South Africa. Noro is personally involved with inspecting all aspects of production, from visiting the animal farms to checking the machinery used and keeping restrictions on the dye processes to maintain products that are as eco-friendly as possible. He says "Friction, rubbing and heat during processing weaken the fibers in direct proportion to the length of time they are processed. By dramatically shortening this process, we are preventing damage to the enzymes in the fibers and simultaneously profiting the environment."
Differences in processing from other yarn manufacturers include the use of a single roller on the carding machine instead of the usual three, hand-feeding tufts of fiber into the carding machine, and the arrangement of specified color runs by hand. The single roller as well as the shorter bed on the spinning machine result in less twist to the single ply than other yarns, giving a variance in thickness along its length.