Tubes bara uru: ọla kọpa, aluminom, nillon. Mpempe akwụkwọ ọla kọpa: 1. Debe ihe ọla kọpa na isi ihe ma gbatị ala, ịghasa na mmanụ mmanụ dabara na ya .2. Nwee mmetụta na-agagharị na ala wee jiri nwayọ mechie otu ụzọ. Mgbe njikọ ahụ gasịrị, akara a na-emebi emebi site na draịlị, supage, kpuchie ọkpọ ọla kọpa nwere ike ịdị.
