DONGSHAO bụ onye nrụpụta China ama ama na onye na-ebubata ya nwere ahụmịhe afọ pụrụ iche na mmepụta Flat Washer. Anyị na-atụ anya ịmalite mmekọrịta azụmahịa na gị.
GỤKWUOZipu ajụjụDONGSHAO bụ otu n'ime ndị ama ama China Large Washers emeputa na soplaya. Ụlọ ọrụ anyị bụ ọkachamara n'ichepụta nnukwu washers. Nabata ịzụta nnukwu washers si DONGSHAO. A na-aza arịrịọ ọ bụla sitere n'aka ndị ahịa n'ime awa 24.
GỤKWUOZipu ajụjụ