blade and form a great board of supervision

摘要

according to the invention, the supervision work, in order to establish the length of it, if the moment is not part of the foundation on the reinforced glass plate to form zirconium coating layer, and the back of the knife to cut the chain. the connection device it is characteristic of the type of the blade with the supervision of a brave man.;the invention is also the assistant, and the characteristics of it.