For those non-competitive and non-exclusive sheer public utilities, such as air control, city illumination, city public security, etc., the direct investment of city finance is the only mode of provision; as to those infrastructure projects that have obvious crossed the border of the city, such as port, airport, drainage area control, etc. the government of one city or one location can hardly bear the financial burden independently. The main mode of provision for these projects is joint investment of central finance and city finance, directional subsidy of the central finance, the supporting fund provided by city finance or the issuance of city construction bond; for those naturally monopolized products represented by water, electricity, pipe gas, etc., due to its large scale of production, the more concentrated is the production, the lower is the cost of the production. Governmental direct investment or governmental control, such as price control and market-entrance control, can be adopted. For those public utilities that have the quality of redistribution, such as basic education, public sanitation, residence of people of low income, etc., the government can effectively increase the actual income of the people of low income by free education, sanitary improvement, allowance, etc.; for those that have the character of quasi-public utility, such as city road and traffic, their characters as common commodity make it possible to introduce market mechanism.
具有非竞争性和非排斥性的纯公共品，如空气治理、城市照明、城市公共安全等，城市财政的直接投资是这类产品的唯一供给方式；具有明显外溢性的，如港口、机场、流域治理等为代表的基础设施项目，一市、一地政府往往难以独立承受其财政压力，中央财政和城市财政共同出资、中共财政定向补助、城市财政提供配套资金或发行城市建设债券是主要供给方式；具有行业垄断性的，如供水、供电、管道煤气等为代表的天然垄断产品，因其生产规模越大，生产越集中，产品的成本就越低，可以采取政府直接投资经营的方式，或实施政府管制包括价格管理制和市场准入管制；具有再分配性质的，如基础教育、公共卫生、低收入住宅等公用事业，政府通过免费教育、环境卫生的改善以及津贴服务等，可以有效增加低收入者的实际所得；具有一般性准公共品特点的，如城市道路交通等，作为混合品，城市道路交通还具有一般商品的特征，这使得在道路交通管理中引入市场机制成为可能。
Is specialized in chemical storage and transportation of oil equipment manufacturers of high-tech enterprises, the company leading port marine products are working arm; rail, road tanker loading and unloading of the crane, ladder activities; universal connector; Floating unloading device; Tank central drainage system and respiratory valves, Zuhuo-tank, and other accessories.
抚顺海洋流体装卸设备有限公司是专业从事石油化工储运设备制造的高科技企业，公司主导产品有港口海洋装卸臂；铁路、公路槽车装卸鹤管、活动梯；万向连接器；浮动式卸油装置；储罐中央排水系统及呼吸阀、阻火器等各种油罐附件等。
The institute has now finished almost 1000 engineering projects both at home and abroad, including almost all the projects such as the docks, sliding way of building berth, and piers of domestic large scale shipyards, the maritime engineering projects of over 80% medium and small scale shipyards, and various overseas maritime projects; the maintenance projects of foundation pits of such renowned buildings in Shanghai as Oriental Pearl, Security Exchange Building, Bund Financial Center, Global Financial Center in Lujiazui in Pudong, Zhendan Building etc; more than 70% of major river dredging projects and near-port water sluice gate projects in recent two years; Yellow River pipeline of west-to-east gas project, various river-spanning large diameter pipeline projects, and the water supply and drainage projects of many power plants in Hebei and Guangxi provinces and areas along the Changjiang River.
至今已为国内及国外设计建成的工程项目近1000余项。其中包括全国几乎所有的大型修造船厂的船坞、船台滑道及码头工程，80%以上的中小型修造船厂的相关水工工程，大量国外水工工程；上海市重要标志性建筑东方明珠、证券大厦、外滩金融中心及浦东陆家嘴环球金融中心、震旦大厦等的基坑围护工程；上海市近两年七成以上的河道整治工程及临港水闸重点工程；西气东输黄河顶管穿越工程、大量越江大直径管道工程及河北、广西及长江沿线众多电厂的取排水工程等等。
Research on the solution of seepage free surface to the port shores in Three Gorges reservoir Optimization of Port Bank Slope Drainage Technique in Three Gorges Area
三峡库区港口岸坡渗流自由面求解方法研究三峡水库港口岸坡排水方案优化研究
Influence of the distance of plastic drainage plate upon time and cost in TianJin Port Area improved by vacuum preloading
天津港真空预压加固排水板间距对工期和造价的影响
Being the biggest or important river port city in the drainage basin; being the central city with significance of the whole basin.
流域内最大的或重要的河港城市：全流域意义的中心城市。