Tianjin Port Pacific ọdụ ụgbọ mmiri mba ụwa Tianjin Hongqiao ezigbo ụlọ ahịa ọrụ center Tianjin Tourism Group Ụgwọ nke ụlọ ọrụ Tianjin Metallurgical Iron Material Processing Co., Ltd CCCC mbụ navigation engineering Survey na Design Institute (Tianjin)
