The main drain is a 1-inch to 2-inch line leading from the bottom of the pool, outside the pool shell, to a trench about 24 inches below ground level. The drain joins other pool lines from the skimmers and return lines. The skimmer and main drain lines join into one that leads to the suction side of the pool pump.
Bohai University (BU), which was established in February 1950, is a comprehensive university administered by Liaoning Province government. BU is located in Jinzhou City, Liaoning Province, China. Jinzhou is a seaside city with long history and cultural tradition.
Weihai (Chinese: å¨æµ·; pinyin: WÄihÇi, known as Port Edward from 1898 to 1930) is a city in eastern Shandong province, People's Republic of China.It is the easternmost prefecture-level city of the province and a major seaport.eihai Torch Hi-Tech Science Park is a state-level development zone approved by the State Council on March 1991. Located in Weihai's northwest zone of culture, education and science, the Park has the total area of 111.9 km 2 (43.2 sq mi), a coastline of 30.5 km (19.0 mi) and 150,000 residents.