Hagoromo Bungu
Hagoromo Bungu () was a Japanese office supply and chalk company. It is best known for having produced the Hagoromo Fulltouch Chalk, a brand of blackboard chalk. Though mainly sold in Japan and South Korea, the chalk won over teachers and mathematicians worldwide with its ease of handling, writing, and erasure. Nonetheless, general decline in chalk sales among other factors led to its shuttering in 2015. The announcement of the company's closing led fans to stockpile its chalk. South Korean company Sejongmall eventually bought the Hagoromo brand and much of the original company's equipment and has manufactured  the chalk in South Korea since 2016. History. The company was founded in October 1932 as "Nihon Chalk Seizosho". The original factory was located in Naka-ku, Nagoya, but was destroyed in August 1944 during World War II. The company was re-established in 1947 and renamed to Hagoromo Bungu. A factory in the nearby city of Kasugai was completed in 1961, and the offices moved there in 1992. Success. The company sold over 90 million pieces of chalk a year at its peak in 1990 and held a 30% share of the domestic market, according to Tokyo Shoko Research . Mathematician Satyan Devadoss wrote in 2010 that the Hagoromo chalk can be called "the Michael Jordan of chalk, the Rolls Royce of chalk". Several other well-known mathematicians and professors, such as Brian Conrad and David Eisenbud, also prefer the product. Eisenbud first introduced the chalk to American mathematicians and worked to have it imported to the US; it is now sold on Amazon. Closing. In October 2014, company president Takayasu Watanabe released a statement announcing the company would stop chalk production in February 2015 and sales in March 2015. Watanabe, Ryuzo Watanabe's successor, mentioned reasons for the closure  included the fact that "blackboards are no longer the norm in classrooms" and that "the number of students is also on the wane". In a 2015 interview, Watanabe also cited his declining health as a major reason for the closure. Final months. The announcement to cease business led to the mass buying, hoarding, and reselling of chalk among its fanbase. By June 2015, Watanabe reported that production continued for a month longer than originally planned and finally ended on 31 March 2015. Legacy. Hagoromo sold the three custom-made machines used for making Hagoromo chalk. Umajirushi, a Japanese blackboard manufacturer  looking to expand their chalk production, bought one. Umajirushi has since launched DC Chalk Deluxe (). Sejongmall, a retailer in South Korea who previously imported the Hagoromo chalk, bought the other two machines and the rights to the Hagoromo brand and continue to produce the chalk in South Korea. Mathematicians consider it indistinguishable from the original product. Products. The Hagoromo Fulltouch Chalk product line is what the company is most known for. The entire line is marketed as being "dustless".