50 Lan

五十嵐企業股份有限公司（品牌商標「50嵐」） is a hand-cranked beverage chain in Taiwan, founded in 1994 on Tainan's Deshing Road by founder and chairman Ma Shaowei. Currently, the company is headquartered in Taipei, Central, Kaohsiung and Tainan, and has more than 600 stores throughout Taiwan.

In 1994, Ma started selling beverages in front of his mother's franchised chicken fillet store, mainly fruit juices, and in 1995, Ma named his booth "50 Arashi" and shifted his focus to tea and beverages, and later stopped selling fruit juices.

In 2000, Kuo Tsung-Feng established Hsin-Lam Co., Ltd. to represent the business in Kaohsiung district. 2002, Ma Ya-Fen established Arashi Co., Ltd. to represent the business in Taichung district. 2003, Lou Chien-Shen established Sham-Kung Tea Co., Ltd. to represent the business in Taipei district. 2005, Ma Ya-Fang established Chun-Lam Co., Ltd. to represent the business in Taichung district; in 2016, it was merged into Arashi Co. 2014, the Ltd. was renamed as "Fifty Arashi Enterprise Co.

Currently, Igarashi has authorized the establishment of independent franchise headquarters in Taipei (Taipei City, New Taipei City, Keelung), Central (Taoyuan, Hsinchu, Miaoli, Taichung City, Nantou, Changhua, Yunlin, Chiayi, Penghu, Kinmen) and Kaohsiung (Kaohsiung City, Pingtung, Taitung), while Tainan (Tainan City, Kaohsiung City, Okayama District, Lujhu District) is directly managed by Igarashi headquarters. The four regional headquarters are under their own management, and Yilan and Hualien have no established business for the time being. No overseas headquarters have been established and no overseas franchise chain stores are accepted.