Congratulations on your completion. (30th Johkasou Technical Supervisor workshop in Osaka)｜Japan Education Center of Environmental Sanitation

Congratulations on your completion. (Johkasou Technical Supervisor workshop 30th Osaka venue)

Johkasou Technical Supervisor Seminar 30th Osaka venue List of graduates

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Public interest incorporated foundation

Japan Education Center of Environmental Sanitation

130-0024

２-23-３ Kikukawa, Sumida-ku, Tokyo

TEL: 03-3635-4880 (Switchboard),