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Toho Zinc
is a Japanese manufacturer of zinc related products. Established in 1937, it smelts nonferrous metals such as lead and zinc and produces electronic components. There are seven branches in Japan and two branches in China, in Hong Kong and Shanghai. The company was responsible for cadmium poisoning on Tsushima Island in the late twentieth century. The company is Japan’s third-biggest producer of zinc. Operations Toho Zinc has four manufacturing sites in Japan: * Annaka smelter and refinery with zinc smelting Zinc smelting is the process of converting zinc concentrates ( ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling poin ... and refining operations * Chigirishima smelter and refinery with lead smelting and refining operations * Onahama smelter and refinery recycling operations * Fujioka Works at which electronic components and materials ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of share capital, stock which are intended to be freely traded on a stock exchange or in over-the-counter (finance), over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (listing (finance), listed company), which facilitates the trade of shares, or not (unlisted public company). In some jurisdictions, public companies over a certain size must be listed on an exchange. In most cases, public companies are ''private'' enterprises in the ''private'' sector, and "public" emphasizes their reporting and trading on the public markets. Public companies are formed within the legal systems of particular states and so have associations and formal designations, which are distinct and separate in the polity in which they reside. In the United States, for example, a public company is usually a type of corporation, though a corporation need not be a public company. In the United Kin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc
Zinc is a chemical element; it has symbol Zn and atomic number 30. It is a slightly brittle metal at room temperature and has a shiny-greyish appearance when oxidation is removed. It is the first element in group 12 (IIB) of the periodic table. In some respects, zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. Zinc is the 24th most abundant element in Earth's crust and has five stable isotopes. The most common zinc ore is sphalerite (zinc blende), a zinc sulfide mineral. The largest workable lodes are in Australia, Asia, and the United States. Zinc is refined by froth flotation of the ore, roasting, and final extraction using electricity ( electrowinning). Zinc is an essential trace element for humans, animals, plants and for microorganisms and is necessary for prenatal and postnatal development. It is the second most abundant trace metal in humans after iron, an import ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manufacturing Companies Based In Tokyo
Manufacturing is the creation or production of goods with the help of equipment, labor, machines, tools, and chemical or biological processing or formulation. It is the essence of the secondary sector of the economy. The term may refer to a range of human activity, from handicraft to high-tech, but it is most commonly applied to industrial design, in which raw materials from the primary sector are transformed into finished goods on a large scale. Such goods may be sold to other manufacturers for the production of other more complex products (such as aircraft, household appliances, furniture, sports equipment or automobiles), or distributed via the tertiary industry to end users and consumers (usually through wholesalers, who in turn sell to retailers, who then sell them to individual customers). Manufacturing engineering is the field of engineering that designs and optimizes the manufacturing process, or the steps through which raw materials are transformed into a final pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining Companies Of Japan
Mining is the Resource extraction, extraction of valuable geological materials and minerals from the surface of the Earth. Mining is required to obtain most materials that cannot be grown through agriculture, agricultural processes, or feasibly created Chemical synthesis, artificially in a laboratory or factory. Ores recovered by mining include Metal#Extraction, metals, coal, oil shale, gemstones, limestone, chalk mining, chalk, dimension stone, rock salt, potash, gravel, and clay. The ore must be a rock or mineral that contains valuable constituent, can be extracted or mined and sold for profit. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even fossil water, water. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, and final mine reclamation, reclamation or restoration of the land after the mine is closed. Mining ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics Companies Of Japan
Electronics is a scientific and engineering discipline that studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other electrically charged particles. It is a subfield of physics and electrical engineering which uses active devices such as transistors, diodes, and integrated circuits to control and amplify the flow of electric current and to convert it from one form to another, such as from alternating current (AC) to direct current (DC) or from analog signals to digital signals. Electronic devices have significantly influenced the development of many aspects of modern society, such as telecommunications, entertainment, education, health care, industry, and security. The main driving force behind the advancement of electronics is the semiconductor industry, which continually produces ever-more sophisticated electronic devices and circuits in response to global demand. The semiconductor industry is one of the global ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iwaki, Fukushima
is a Cities of Japan, city located in Fukushima Prefecture, Japan. , Iwaki had a population of 322,019 in 143,500 households, and population density of 261 persons per km². The total area of the city is , making it the largest city in the prefecture and the 10th largest city in Japan (2010) in terms of area. Iwaki is a designated Core cities of Japan, core city, and is also one of the growing number of Hiragana and katakana place names, cities written in ''hiragana''. The present Iwaki City started as the merger of 14 smaller municipalities on October 1, 1966. Every year, Iwaki hosts the Taira Tanabata Festival from 6–8 August. Geography and climate The city is located at the southeastern end of Tōhoku region and borders on Ibaraki Prefecture. The city occupies around 8.9 percent of the total area of Fukushima Prefecture. The eastern part of the city is made up of of coastline which faces the Pacific Ocean and the western part goes through the Abukuma highlands and joins up w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ōsakikamijima, Hiroshima
is a town located in Toyota District, Hiroshima Prefecture, Japan. Ōsakikamijima is coterminous with the island of the same name, which is one of the Geiyo Islands of the Seto Inland Sea between Hiroshima Prefecture and Ehime Prefecture. The new town of Ōsakikamijima was formed on 1 April 2003, with the merger of the towns of Ōsaki, Higashino and Kinoe, all from Toyota District. As of 31 March 2024, the town of Ōsakikamijima had an estimated population of 6,744 and a density of 160 persons per km2. The total area is 43.24 km2. Transportation Ōsakikamijima is the largest island in Hiroshima Prefecture, yet has no fixed links to other islands or the mainland. A bridge to the nearby Ōsakishimojima, which is linked with the mainland via the Akinada Tobishima Kaido, has been planned since 1972 but construction is yet to start. There are ferry services to Ōsakishimojima, Ōmishima Island, Takehara (Honshu) and Imabari (Shikoku). Education Elementary School *O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Smelting
Zinc smelting is the process of converting zinc concentrates ( ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling point. At temperatures typically used for smelting metals, zinc is a gas that will escape from a furnace with the flue gas and be lost, unless specific measures are taken to prevent it. The most common zinc concentrate processed is zinc sulfide,. which is obtained by concentrating sphalerite via froth flotation. Secondary (recycled) zinc material, such as zinc oxide, is also processed with the zinc sulfide.. Approximately 30% of all zinc produced is from recycled sources. Methods There are two methods of smelting zinc: the pyrometallurgical process and the electrolysis process. Both methods are still used. Both of these processes share the same first step: roasting. Roasting Roasting is a process of oxidizing zinc sulfide concentrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annaka, Gunma
file:The remains of the Usui Magistrate’s office.jpg, 240px, Edo-period Usui Magistrate's office in Annaka is a Cities of Japan, city located in Gunma Prefecture, Japan. , the city had an estimated population of 47,911 in 24,749 households, and a population density of 210 persons per square kilometre. The total area of the city is . Geography Annaka is located in the southwestern portion of Gunma Prefecture at the very northernmost point of the Kantō Plain, bordered by Nagano Prefecture to the west. The Usui Pass connects Annaka with neighboring Karuizawa, Nagano. *Mountains: Chausuyama (596 m), Mount Myōgi (1,103 m) *Rivers: Usigawa, Tsukumogawa *Lakes: Sakamoto Dam, Nakagi Dam Surrounding municipalities Gunma Prefecture * Shimonita, Gunma, Shimonita * Takasaki, Gunma, Takasaki * Tomioka, Gunma, Tomioka Nagano Prefecture * Karuizawa, Nagano, Karuizawa Climate Annaka has a Humid continental climate (Köppen ''Cfa'') characterized by warm summers and cold winters with heavy s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shanghai
Shanghai, Shanghainese: , Standard Chinese pronunciation: is a direct-administered municipality and the most populous urban area in China. The city is located on the Chinese shoreline on the southern estuary of the Yangtze River, with the Huangpu River flowing through it. The population of the city proper is the List of largest cities, second largest in the world after Chongqing, with around 24.87 million inhabitants in 2023, while the urban area is the List of cities in China by population, most populous in China, with 29.87 million residents. As of 2022, the Greater Shanghai metropolitan area was estimated to produce a gross metropolitan product (GDP (nominal), nominal) of nearly 13 trillion Renminbi, RMB ($1.9 trillion). Shanghai is one of the world's major centers for finance, #Economy, business and economics, research, science and technology, manufacturing, transportation, List of tourist attractions in Shanghai, tourism, and Culture of Shanghai, culture. The Port of Sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hong Kong
Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the world. Hong Kong was established as a colony of the British Empire after the Qing dynasty ceded Hong Kong Island in 1841–1842 as a consequence of losing the First Opium War. The colony expanded to the Kowloon Peninsula in 1860 and was further extended when the United Kingdom obtained a 99-year lease of the New Territories in 1898. Hong Kong was occupied by Japan from 1941 to 1945 during World War II. The territory was handed over from the United Kingdom to China in 1997. Hong Kong maintains separate governing and economic systems from that of mainland China under the principle of one country, two systems. Originally a sparsely populated area of farming and fishing villages,. the territory is now one of the world's most signific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
