TʻO ianjin YuantaiDerun pūʻulu, i hoʻokumu ʻia i ka makahiki 2002, mai kona hoʻokumu ʻia ʻana ua koi ʻia e hana i ka paipu kila o ka ʻōnaehana rectangular tube, mai nā makahiki he nui, ʻo kā mākou pāʻina rectangular tubes mai nā lako liʻiliʻi, hoʻohana i ka puka makani puka, hana mālie i nā mīkini ʻenekinia, nā lako hana, ʻO ke kumu nui, a hiki i kēia manawa ke kūkulu nei mākou i ka hale hana kila, ʻoi aku hoʻi i nā makahiki i hala iho nei, e koi ana i ka hale noho hale kila prefabricated, I loko o ka ʻōnaehana hana kila holoʻokoʻa, ʻoi aku ka nui nā noi no kēia ʻoihana e wehe i kahi mākeke hou. A laila ua hoʻomaka mākou i ka makahiki 2018 i hoʻokumu i ka hoʻomohala ʻana i ka ʻoihana torque tube a me ka hui ʻana i nā kuikahi, ma hope o mākou i kono ʻia e ke kapikala ʻo Tianjin, ke kulanui ʻo Beijing a pēlā aku kekahi o nā koleke a me nā kulanui, a kekahi mau 'epekema noiʻi keʻena, hui e hele mai i loko o ka anuu a hana i ka 'oihana kaulahao, e hana i ka hana, aʻo a me ka noiʻi, me ka hui, mai elua ano o ka standardization a me ka hana akamai, E lawe mai i mea hou. i ka oihana