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://lifecharity.org.uk/wp-content/uploads/formidable/70/Quick-List-Of-Expedia-Customer-Service-Toll-Free-Numbers-Assistance-Guide.pdf
https://lifecharity.org.uk/wp-content/uploads/formidable/70/Faqs-List-of-Booking-Com-Customer-Service-24-7-Live-Person-Support-Numbers-a-Complete-Guide.pdf
https://lifecharity.org.uk/wp-content/uploads/formidable/70/Faqs-List-of-Expedia-Customer-Service-24-7-Live-Person-Support-Numbers-a-Complete-Guide.pdf
https://lifecharity.org.uk/wp-content/uploads/formidable/70/Faqs-List-of-JustFly-Customer-Service-24-7-Live-Person-Support-Numbers-a-Complete-Guide.pdf
https://lifecharity.org.uk/wp-content/uploads/formidable/70/Faqs-List-of-JustFly-Customer-Service-24-7-Live-Person-Support-Numbers-a-Complete-Guide.pdf