山shan東dong大da禹yu建jian工gong機ji械xie有you限xian公gong司si是shi專zhuan業ye生sheng產chan輪lun胎tai起qi重zhong機ji的de廠chang家jia，是shi國guo內nei同tong行xing業ye重zhong點dian企qi業ye之zhi一yi，全quan國guo四si家jia獲huo得de特te種zhong設she備bei生sheng產chan許xu可ke證zheng企qi業ye之zhi一yi，並bing在zai產chan品pin創chuang新xin方fang麵mian獲huo得de兩liang項xiang專zhuan利li。