Ndife gulu la akatswiri omwe abwera palimodzi kuti akwaniritse zomwe zikuchulukirachulukira za zida zaku China zopangidwa ndi agrochemical formulation.
M'dziko lofulumira la mafakitale amakono, kugwiritsa ntchito mphero za jet kwakhala chida chofunikira kwambiri popera kwambiri. Ndi kukula kwa tinthu kufika ma microns ochepa kapena ma submicrons, jet