A ballcock (also balltap or float valve) is a mechanism or machine for filling water tanks, such as those found in flush toilets, while avoiding overflow and (in the event of low water pressure) backflow. The modern ballcock was invented by José Antonio de Alzate y RamÃrez, a Mexican priest and scientist, who described the device in 1790 in the Gaceta de Literatura Méxicana.[1] It consists of a valve connected to a hollow sealed float by means of a lever, mounted near the top of the tank. The float is often ball-shaped, hence the name ballcock. The valve is connected to the incoming water supply, and is opened and closed by the lever which has the float mounted on the end. When the water level rises, the float rises with it; once it rises to a pre-set level, the mechanism forces the lever to close the valve and shut off the water flow. This is an example of negative feedback and of proportional control. Ball Cock, Brass Ball Bibcock, Ballcock Valve, Toilet Ballcock Valve ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsirvalves.com
Years ago, some stocks are expected to soar! Secret smell! The market will soon reverse the flow of institutional capital has undergone tremendous changes! The main funds are contemplating a new layout. At present, China and Germany are each other's largest trading partners. In 2010, bilateral trade between China and Germany exceeded US$140 billion. Further deepening trade and economic cooperation between China and Germany is an important topic for Li Keqiang’s visit. German Chancellor Angela Merkel stated that Germany is willing to hold dialogues with China in the fields of politics, economy, diplomacy, science and technology, environmental protection, and society, and is willing to play an active role in promoting the EU’s recognition of China’s full market economy status.
However, in the issue of rare earth exports, there has been a discordant voice between China and Germany. According to German media reports, German Minister of Economic Affairs Brudler’s meeting with Li Keqiang on January 6th local time “required that China not increase the difficulty of obtaining rare earths in the westâ€, but Li Keqiang refuted Bruderer’s concerns about China’s rare earth export policy. .
In this regard, Li Keqiang said at the Sino-German industrial and commercial sector dinner held that day that China's rare earth reserves now account for only about 13% of the world's total, while supply accounts for more than 90% of the world's total. China's legal regulation of rare earth development order is necessary to protect the ecological environment and exhaustible resources and reduce pollution damage, and it is also necessary to realize the long-term and effective use of rare earth resources.
China refused to relax Sino-German rare earth signing huge economic and trade contracts
On January 9, local time, Vice Premier Li Keqiang ended his four-day visit to Germany and went to the United Kingdom for an official visit. It is reported that on this trip to Germany, the two parties signed contracts and agreements valued at 8.7 billion U.S. dollars, involving finance, shipbuilding, solar energy, automobiles, and textile machinery. However, Germany’s request for China to relax its rare earth exports was rejected by Li Keqiang.