Ka whakarerekē te wā moe o ngā kōpaki whakamutu i te hītori o ētahi atu take, e rereke ana i ngā momo pūngao whakamahi, te mahi hanga, me te pākiri. Ki te taha o Jiangsu Changfeng Medical Industry Co., Ltd., ka hanga nei ngā kōpaki whakamutu ki te wā moe roa i runga i te whakaaetanga o te tūnga pai. I tēnā wā, ka taea te noho mō [X] tau i raro i ngā tikanga whakahau, e hiahiatia ana ko te wāhanga maroke, pakari, hei tūtohi i te mōhiotanga o te rāwhiti. Hei tāku, he whakaaro nui te tirotiro i te wā mutu kai ake i runga i te pākiri o ia poraka kōpaki, inahea ka whakarerekētia e ngā take pērā i te momo kōpaki me ngā pūngao pākiri whakamahi.