Ngwunye mineral
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Igwe na-ejuputa mineral
Steel, welded, shei metal, na ihe nkedo juputara na ihe nkedo ịnweta nke na-ebelata mkpọtụ epoxy resin.
Nke a na-emepụta ihe ndị mejupụtara nwere nkwụsi ike ogologo oge nke na-enyekwa ọkwa dị mma nke static na ike siri ike.
Dịkwa ya na ihe na-ejuputa radieshon