I-1, emva kokusetyenziswa kwezihluma zetsimbi kufuneka zibekwe kwi-shelf ezinikezelweyo, zigcinwe kwi-ventilated, eyomileyo, ifektri ecocekileyo, ngokugcinwa ngesandla. 2, umphezulu kufuneka uhlale ukhusela umhlwa, ungavumelekanga kwi-asidi, i-alkali, ityuwa, iigesi zeekhemikhali kunye nokugcinwa komswakama. 3, akuvumelekanga kwindawo yobushushu obuphezulu ...
Funda ngokugqithisileyo