Ke kahua noi: Model 9-19, 9-26 Centrifugal Blowers e hoʻohana pinepine ʻia no ka hoʻoheheʻe ʻana i nā kapuahi forging a me metallurgy, hoʻohana nui ʻia no ka lawe ʻana i nā aterials, ea a i ʻole nā ea ʻē aʻe i hiki ʻole ke hoʻā ʻole iā ia iho, ʻaʻohe hana ʻino i ke kino kanaka. a ʻaʻole ia e ʻino i nā kila.ʻAʻole ʻae ʻia kahi mea paʻa i loko o ke kinoea.ʻAʻole kiʻekiʻe ka mahana waena ma mua o 50 ℃ (ʻaʻole kiʻekiʻe ma mua o 80 ℃ ma ka hapa nui).ʻAʻole iʻoi aku ka lepo ma mua o 150mg/m3.a i ka lepo a i ʻole ka palaoa paʻakikī.