Ngwongwo ndi mmadu nwere ọgụgụ isi

*Ofzọ nke na-eme ka eriri waya alloy (patent no.:ZL 201010518772.6).

*Ụdị akụrụngwa na usoro ya maka ịme ụlọ ọla kọpa alloy Belt site na ịgbanye ego (patent no.:ZL 201210411177.1)

*Ofzọ nke ịkwadebe ọla kọpa na ọla kọpa na almunium oxide (part No.:ZL 20131110151407.X).