Kwitwaza imipira yicyuma bifite Grade nyinshi.Ukurikije urutonde rwamanota murwego rwigihugu GB / T308-2002, bagabanijwemo G5, G10, G16, G28, G40, G60, G100, G200, G500, G1000, nibindi G ni inyuguti yambere ya Grade mucyongereza , n'imibare ikurikira ifite urwego rutandukanye.Gutoya gutitira ...
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