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 mākou e hoʻomohala nei i ka hale hana kila, ʻoi aku ka nui o 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 o nā noi no kēia ʻoihana e wehe i kahi mākeke hou. i hoʻokuʻu ʻia i ka makahiki 2018 i hoʻokumu ʻia i ka hoʻomohala ʻana i ka ʻoihana torque tube a me ka hui ʻana i ke kuikahi, ma hope o mākou i kono ʻia e ke kapikala ʻo tianjin, ke kulanui ʻo Beijing o ka hoʻolālā ʻana a pēlā aku kekahi o nā koleke a me nā kula nui, a me kekahi mau ʻepekema noiʻi noiʻi, hui pū e hele mai i ka anuu. e hana i ke kaulahao hana, e hana i ka hana, aʻo a me ka noiʻi, me ka hui, mai ʻelua ʻaoʻao o ka standardization a me ka hana akamai, E lawe mai i kahi mea hou i ka ʻoihana.