http://pastport.jp/user/lybaiyouoscar ja-JP PBT material itself is an engineering plastic with excellent electrical properties and chemical resistance. https://www.polyhdpe.com/pbt-resin.html. However, when reinforced with glass fiber (GF30 PBT), its dimensional stability, strength, and heat deflec 2026-02-28T16:32:01+0900 http://pastport.jp/user/lybaiyouoscar/timeline/GF30%20PBT%20material lybaiyouoscar http://pastport.jp/user/lybaiyouoscar/timeline/GF30%20PBT%20material