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://ballardelks.org/wp-content/uploads/formidable/29/quick-list-of-travelo-city-customer-service-24-hr-support-numbers-a-step-by-step-guide.pdfhttps://ballardelks.org/wp-content/uploads/formidable/29/quick-list-of-travelo-city-customer-service-24-hr-support-numbers-a-step-by-step-guide.pdfhttps://ballardelks.org/wp-content/uploads/formidable/29/quick-list-of-travelo-city-customer-service-24-hr-support-numbers-a-step-by-step-guide.pdf
https://www.slhf.org/sites/default/files/documents/Faqs-List-of-Trip-Com-Customer-Service-24-7-Live-Person-Support-Numbers-a-Complete-Guide.pdf