Aʻo leʻi oʻo i le faʻagasologa autu o le extrusion, o le fafaga polymeric teuina e faʻafefiloi ma faʻaopoopoga eseese e pei o stabilizers (mo le vevela, faʻamaʻi faʻamaʻi, faʻamautu UV, ma isi), lanu lanu, mumu mumu, faʻatumu, lubricants, faʻamalosi, ma isi mea e faʻaleleia ai le tulaga lelei ma le fa'agaioiina.Mi...
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