Dab tsi yog yub tais

Cov ntaub nplaum seedling, tseem hu ua cov tais, yog cov cuab yeej tseem ceeb hauv lub Hoobkas yub cov txheej txheem. Raws li kev hloov pauv hauv kev ua lag luam niaj hnub, lawv muab kev lav kom sai thiab loj- nplai ntau lawm. Cov ntaub nplaum seedling feem ntau yog ua los ntawm cov khoom siv xws li polystyrene ua npuas ncauj, polystyrene, thiab polypinylene los ntawm tshuab moulding lossis txhaj tshuaj molding cov txheej txheem.