In 1969, low-temperature transport of perilla leaves began, and in 1970, night-time cargo collection began. In 1972, when the company started, the Toyohashi Greenhouse Horticulture Agricultural Cooperative set up a collection and shipping area equipped with a cold storage as part of a project to promote the development of a low-temperature shipping system for fruits and vegetables. It seems that the introduction of low-temperature distribution technology overcame the decline in quality seen in the summer and increased its market share. Rokuzo Igawa in Yoshikawa and Tamekichi Obayashi of Kitajima, Nagase, Ryo Tominaga and others of the town developed the technique of cultivating flower heads, and Sadao Tominaga of the same town developed the technique of cultivating chrysanthemum flowers.

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