Cylindrical magnet magnet manufacturers are not invented, is a natural magnetite. The ancient Greeks and Chinese people find nature a kind of natural stone magnetized magnet, called "magnet." This stone can magically pick up small pieces of iron magnets, but after swinging freely always point in the same direction. Early sailors put this magnet as its earliest compass to identify the direction of the sea. The earliest discovery and use magnets should be Chinese people, which is the "compass", is one of China's four great inventions. After thousands of years of development, today has become a magnet strong material in our lives. Alloy synthesis by different materials can be achieved with the same effect as the magnet, but also can improve the magnetic force. In the 18th century there have been man-magnet, but the manufacturing process of a stronger magnetic cylindrical magnet was very slow until the 1920s to produce aluminum-nickel-cobalt (Alnico). Subsequently, the 1950s produced the ferrite (Ferrite) magnets rectangular sheet manufacturers, the 1970s to create a rare earth magnets [Rare Earth magnet includes neodymium (NdFeB) and samarium cobalt (SmCo)]. Thus, magnetic technology has been rapid development of magnetic materials also makes the device more compact to make simple homemade electromagnet: the need for wire, nails to make his body; a battery or power supply is supplied with current. Caution To scrape paint enameled wire ends, or with fire. To enameled wire wound in the same direction. To tie a knot tied at the end of enameled wire. Both ends of the magnetic properties of the permanent magnets and electromagnets strongest. Electromagnet magnetic force can be resized. Direction of the electromagnet can be changed. Magnetic solenoid can control freely. Shek Pai single strong magnet factory | Magnet | New Tong Xin magnetic power provided by the Dongguan City, Tong Xin magnetic Limited. Xin Tong, Dongguan City, the new magnetic Limited (www.dgxtxmagnet.com/) strong, credible, in Dongguan, Guangdong magnetic materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the new Tong Xin magnetic and you hand into the brilliant, for a better future!