The rubber to metal bonding mostly adopt sulphurate bonding.But if under sulphurating condition the bonding layer is unstable, or suppurating craft is difficult to come true,we adopt cold bonding.
Current Status: After several years of negotiation, the Met returned the krater to Italy in 2008 in exchange for the rights to display several comparable artifacts on loan.
Still have a turtledove looking for food in the eyot, the clang sparrow circles in the air low soaring , is to hang a corner tower adding a brocade increase a color more.