I te whakaaturanga tatau me ngā matapihi ZAK o te tau 2015, ka whakaatuhia e CBS Industry Co Ltd te tauira hou o te mīhini whakarewa matapihi WMH-318 uPVC 3-upoko, he hoahoa auaha, ko te teitei whakarewa mōrahi he 180mm, he arataki raina hurihanga mō ngā whakapiri. Arataki raina mō te upoko whakarewa. He mīhini whakarewa 3-upoko, engari e 4 ngā tūranga whakarewa, ko te tikanga ka taea te mahi pērā i te mīhini whakarewa 4-upoko.