Ma 2020 Bakery China ma Shanghai, ua hōʻike nā mea kūʻai aku i ka hoihoi nui i ka ʻenehana holomua o nā mīkini ʻoki meaʻai ultrasonic, a he mea kupaianaha ka hopena. ʻOi aku ma mua o 200 mau kāleka ʻoihana i hoʻololi ʻia ma ia wahi, a nui nā mea kūʻai aku i hoʻopaʻa inoa pololei i nā ʻaelike.
