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3D FRP Sandwich Vaj Huam Sib Luag
Nws yog cov txheej txheem tshiab, tuaj yeem tsim lub zog siab thiab ceev ntawm homogeneous composite vaj huam sib luag.
Sew highdensity PU phaj rau hauv tshwj xeeb 3 d ntaub, los ntawm RTM (nqus moldig txheej txheem).
