The Czech Republic brand "Kohinol" was founded by Josef Hardtmuth in Vienna in 1790. In 1848, the production of graphite reeds was moved to Chescave Jayovice. In the meantime, KOH-I-NOOR pencils were a huge success at many exhibitions around the world. The product was won numerous awards in Milan in 1905 in 1855 in 1856, 1900 and 1925 in London, 1862 in Vienna 1882. Koh-i-noor graphite reeds have been an assortment of products in four major categories. Art Assortment (ART), School Assortment (SCHOOL), OFFICE Hobby KOH-I-NOOR Company continues to observe the industry development and modern trends while updating and completing its product range based on demand. As well as top-notch pencils, we have a huge selection of stationery items including charcoal, red chalk, pastel, crayon, chalk, oil and water based colors, gisper, Indian ink, drawing materials, rubber and more than 4,500 products. This chalk can be used for marking raw wood during sewing. However, this chalk is primarily used to mark knots and other imperfections in the lumber as its lead is fluorescent under UV light.