Methane dichloro cas 75-09-2 is a kind of organic matter, the molecular formula of CH2Cl2, is colorless limpid liquid, has the pungent odor similar to ether.
NdFeB ring magnets are sometimes also known as discs with central holes. The NdFeB Rings Magnets exits in two styles – 'pure' rings and 'countersunk' rings. The holes are centrally located. The countersunk ring allows for the magnet to be screwed onto ano