School series kitpas school chalkless 6 colors / fine version

"Nihon Rika Chemical Industry Co., Ltd." With 75 years of manufacturing process, using a large number of discarded scallop shells, After the birth of research and development, to make chalk that has no burden on the living body and no burden on the earth! Japan's R & D industry has many products about schools and children's stationery. They are all Japanese schools. Goods for long-term use! Because it is non-toxic and environmentally friendly, and the amount of dust is small, chalk is also used. Designated by our school! In addition, the president, Taihiro Taiyama, has decided to hire disabled children as employees in 1959. Since then, there have been many children who need help to work and get Proper care for the future, such selfless management and contribution also let Japan's RICHEM Become the most wanted corporate company in Japan! Calcium carbonate dust-free chalk made from recycled scallop shells is thinner than chalk on the market! Ashless Chalk Set for Physico-Chemicals of Japan 【Product specifications】 ・ Dimensions: 63mm x φ7mm ・ Color: white, yellow, pink, green, blue, purple ・ Material: chalk / calcium carbonate (including scallop shell powder) ・ Place of origin: Japan