Plastic dropper amapangidwa ndi zinthu za PE, zomwe zimagwiritsidwa ntchito kwambiri mu labotale, kafukufuku wazakudya ndi mafakitale azamankhwala, chodziwika kwambiri ndi mtengo wotsika, wosavuta kugwiritsa ntchito, wosiyanasiyana.Tikamagwiritsa ntchito dropper pulasitiki, tiyenera kulabadira.Sikukokomeza kunena kuti makina ntchito ...
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