ʻO ka hoʻolako kikowaena o ka wai inu ma nā wahi ākea (nā kula. nā halemai, nā kahua, nā hale ʻai, nā hale kūʻai kūʻai, nā alaloa, a me nā mea ʻē aʻe) he hōʻike ia o ka holomua o ka nohona a kōkua i ka hoʻomaikaʻi ʻana i ka manaʻo maikaʻi o nā mea kūʻai.ʻOi aku i ka pōʻaiapili o COVlD-19, ʻaʻole lawa nā lako i hoʻonui i ke koʻikoʻi o ka ʻoihana.Ua ʻoi aku ʻo Dongguan ma mua o 18 mau makahiki o ka ʻike i ka hoʻomohala ʻana i ka ʻoihana, hāʻawi ʻo Kinda i nā ʻōnaehana mālama wai kūpaʻa a maikaʻi a hana mau.
Ua hoʻopuka ka Ministry of Education of the People's Republic of China i ke kūlana ʻenehana o nā koi ʻenehana a me nā kikoʻī o nā lako no ka mālama ʻana i ka membrane wai inu wai ma nā kula mua a me ke kula kiʻekiʻe (JY / T 0593-2019), 5.2.1 a me Appendix A i ʻōlelo ʻia: ( ʻO nā lako hoʻomaʻamaʻa wai kula mua a kula kiʻekiʻe) pono e hoʻohana i ka ultrafiltration a me ka nanofiltration (ma nā wahi wale nō me ka nui o ka pilikia o ka pollution wai maka, hiki ke hoʻohana i ka reverse osmosis. Ke kū ka maikaʻi o ka wai maka i ke kūlana, hiki ke hoʻohana ʻia ka nanofiltration a i ʻole ka ultrafiltration no ka mālama ʻana).