Yuyao Ruihua Hardware Factory Nga omukugu mu kukola tube fitting ya metric n'omugabi mu China, metric female tube fitting yonna eyise ku mutindo gw'okuweebwa satifikeeti z'amakolero g'ensi yonna, era osobola okukakasa ddala omutindo. Bw’oba ​​tosanze kigendererwa kyo metric metric female tube fitting mu lukalala lw’ebintu byaffe, osobola n’okututuukirira, tusobola okuwa empeereza ezikoleddwa ku mutindo.