s120 g/cm3 poly ( l-lactic acid ) gb/t 1033.1-2008 gb/t 19466.3-2004 gb/t … · 2019. 7. 18. ·...
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- S120 g/cm3 Poly ( L-lactic acid ) GB/T 1033.1-2008 GB/T 19466.3-2004 GB/T … · 2019. 7. 18. · S120 g/cm3 Poly ( L-lactic acid ) GB/T 1033.1-2008 GB/T 19466.3-2004 GB/T 19776.2-2004
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