 Our ngwaahịa ige agụnye okomoko na elu ọgwụgwụ foset, hotel ụlọ ịwụ ngwaike ngwa mma, nkwari akụ ịsa usoro, ụlọ mposi flushing valvụ, akpaka sensor foset, na zuru ezu na ukwuu ahaziri wuru nkume ụlọ ịwụ efu na bathtube. 