Each pressure plate of CP series chemical mechanical polishing machine with independent driving of pressure plate is driven by a separate servo reducer. Unlike the way that the central guide roller driven CP machine is driven by friction, the pressure pla
Nowadays little kids are able to use graffiti to express their thoughts in their mind when they are about 2 years old. In order to prevent kids from dirtying houses when they are drawing graffiti, parents can prepare professional colored pencils and paper