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Terbuka jenis pengeluar lengan braided mula -mula menganalisis bahawa peliharaan diri bungkus lengan braided crocheted dari benang nilon. Benang Nylon adalah istilah umum untuk termoplastik yang kaya dengan kumpulan amida berulang pada rantaian karbon molekul, termasuk PA alicyclic, lemak manusia -alicyclic PA dan PA alicyclic. Antaranya, Alicyclic PA mempunyai banyak jenis, dihasilkan dalam kuantiti yang banyak, dan digunakan secara meluas. Namanya ditentukan oleh bilangan atom oksigen individu yang dihasilkan.
①ehightehness, keupayaan memori kemuluran yang baik, dan daya pemulihan lenturan;November 22, 2024
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.