Ko te pakitara ārai karāhe me te anga whakarewa e karapoti ana i te panera karāhe ka kiia he pakitara ārai anga. E ai ki te āhua o te pakitara ārai, ka wehea kia rua ngā momo: te pakitara ārai anga kitea, te pakitara ārai anga huna, me te pakitara ārai anga huna-haurua.
He ngāwari, he watea, he ngāwari ki te tāuta, he ngāwari ki te whakarerekē me te wetewete, ā, he ngāwari ki te whakakapi me te tiaki i te pakitara arai karāhe.
Ka tāutahia tuatahitia te anga poutū (te kurupae whakapae rānei) o te pakitara ārai anga ki runga i te hanganga matua, kātahi ka tāutahia te kurupae whakapae (te anga poutū rānei). Ka hangaia he anga e te anga poutū me te kurupae whakapae. Ka tukatukahia te rauemi panera hei wāhanga kotahi i roto i te wheketere, kātahi ka whakapūmauhia ki runga i te anga e titoa ana e te anga poutū me te kurupae whakapae. Me whakawhiti te kawenga e pikauhia ana e te wāhanga wāhanga rauemi panera ki te hanganga matua mā roto i te anga poutū (te kurupae whakapae rānei). Ko te āhua tino noa o tēnei hanganga ko: i muri i te tāutanga o te anga poutū me te kurupae whakapae ki te papa hei hanga i te anga, ka whakapūmauhia te wāhanga wāhanga rauemi panera ki runga i te anga. Ka honoa poutū te wāhanga wāhanga rauemi panera ki te poutū, ā, ka honoa whakapae ki te kurupae whakapae, ā, ka rongoatia te hononga ki te hiri hei ārai i te urunga o te wai ua me te urunga o te hau.
1. Anga whakakitenga: momo awaawa whakauru whakauru, momo awaawa whakauru whakakotahi, momo awaawa whakauru whakauru;
2. Anga huna: momo poraka, momo iri katoa, momo iri-haurua;
3. Anga huna-haurua: poutū e kitea ana, whakapae e huna ana, poutū e huna ana, whakapae e kitea ana.
E piri ana a Xi'an Gaoke Building Materials Technology Co., Ltd. ki te whanaketanga auaha, e whakatipu ana, e whakapakari ana i ngā hinonga auaha, ā, kua hanga he pokapū R&D rauemi hanga hou nui. Ko te nuinga o te wā, e kawe ana i ngā rangahau hangarau mō ngā hua pēnei i ngā kōtaha uPVC, ngā paipa, ngā kōtaha konumohe, ngā matapihi me ngā tatau, ā, e akiaki ana i ngā ahumahi kia tere ake te tukanga whakamahere hua, te auahatanga whakamātautau, me te whakangungu taranata, me te hanga i te whakataetae matua o te hangarau umanga. Kei a GKBM tētahi taiwhanga whaimana ā-motu a CNAS mō ngā paipa uPVC me ngā taputapu paipa, he taiwhanga matua ā-tāone mō te hangarua i ngā para ahumahi hiko, me ngā taiwhanga e rua i hangaia tahitia mō ngā rauemi hanga kura me te umanga. Kua hanga e ia he tūāpapa whakatinanatanga auahatanga pūtaiao me te hangarau tuwhera me ngā umanga hei tinana matua, te mākete hei aratohu, me te whakakotahi i te ahumahi, te ao mātauranga me te rangahau. I taua wā anō, neke atu i te 300 ngā huinga taputapu R&D matatau, whakamātautau me ētahi atu taputapu a GKBM, he mea hanga ki te rheometer Hapu matatau, te mīhini whakangawari rua-roera me ētahi atu taputapu, ka taea te hipoki i te neke atu i te 200 ngā tūemi whakamātautau pēnei i ngā kōtaha, ngā paipa, ngā matapihi me ngā tatau, ngā papa me ngā hua hiko.