チューブを2重構造にすることにより耐圧力が0.7~1MPa程度まで向上させるための試作開発を進めています。順次2重構造のチューブに切替えていく予定です。
https://chandoo.org/forum/threads/full-list-of-travelocity%C2%AE%EF%B8%8F-customer%E2%84%A2-service-usa-contact-numbers-a-complete-2025-guide.61821/https://chandoo.org/forum/threads/full-list-of-travelocity%C2%AE%EF%B8%8F-customer%E2%84%A2-service-usa-contact-numbers-a-complete-2025-guide.61821/
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https://www.buzzfeed.com/bestmule593/full-list-asianaaaaaaa-customer-service
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