The ọkpụrụkpụ nke wallboard bụ 50mm, na esịtidem nchegbu nke ọkara ugboro quenching na tempering na-abawanye njupụta, ike, ike, ike, na conduction arụmọrụ nke wallboard, artificial ịka nká ọgwụgwọ, nnukwu-ọnụ ọgụgụ machining center nhazi na abụọ, elu ike. na oke nkenke.