The dịgasị iche iche nke ngwaahịa e ọtụtụ-eji na ọtụtụ ulo oru ubi dị ka roba na plastics ， metallurgical mines ， ifufe na ike nuklia, nri ụlọ ọrụ, kreenu na hoist, wdg Ha na-ukwuu mfọn site ọrụ n'ụwa nile n'ihi na ha elu elu arụmọrụ, ọzọ asọmpi price na ọkachamara ọrụ.