红光港机厂以生产“航龙”牌系列港口轮胎起重机著称，这就是港口用户习惯称呼的“红光吊车”。“红光吊车”在国内港口市场占有率已达92％，国内外厂商对此特别关注。日本两家久负盛名的专业公司先后多次要求与红光厂合作生产具有国际先进水平的轮胎起重机。外商一心想利用“ Hongguang Port Machinery Factory is famous for producing “Hang Lung” brand port tire cranes. This is what the port users are used to calling “red light cranes.” The “red crane” has a market share of 92% in the domestic port market. Domestic and foreign manufacturers are particularly concerned about this. Two prestigious professional companies in Japan have repeatedly requested the cooperation with the Red Light Factory to produce tire cranes with advanced international standards. Foreigners are bent on using "