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。
full-list-of-qatar-airways-customer-service-24-7-live-agent-support-numbers-a-complete-guide
full-list-of-qatar-airways-customer-service-24-7-live-agent-support-numbers-a-complete-guide
full-list-of-qatar-airways-customer-service-24-7-live-agent-support-numbers-a-complete-guide
full-list-of-qatar-airways-customer-service-24-7-live-agent-support-numbers-a-complete-guide
https://forum.apidog.com/t/copa-airlines-usa-customer-service-contact-numbers-a-step-by-step-guide/3836