Model GHE interlayer kpo oku igwe anaghị agba nchara okpomọkụ na-achịkwa drum bụ otu n'ime isi akụrụngwa eji na laabu nke tannery ma ọ bụ akpụkpọ anụ ụlọ ọrụ na-emepụta ọhụrụ ngwaahịa ma ọ bụ ọhụrụ usoro. Ọ dị mma maka ịrụ ọrụ mmiri na nkwadebe, tanning, neutralizing na dyeing Filiks nke akpụkpọ anụ.
Model GHE interlayer kpo oku igwe anaghị agba nchara okpomọkụ na-achịkwa ụlọ nyocha drum bụ tumadi mejupụtara nke drum ahụ, etiti, ịnya ụgbọ ala, interlayer kpo oku & ikesa usoro na electric usoro, wdg.