Faʻafeiloaʻi i la matou upega tafaʻilagi mo faʻamatalaga o oloa ma faʻatalanoaga. O la matou upega tafaʻilagi: https://www.vet-china.com/ Etching of Poly and SiO2: A maeʻa lenei, o le sili atu Poly ma le SiO2 e togi ese, o lona uiga, aveese. I le taimi nei, o loʻo faʻaaogaina le etching faʻatonu. I le fa'avasegaga...
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