PMMA Acrylic Vacuum Glove Box

We have three type of PMMA Acrylic Vacuum Glove Box for laboratory： Type A: It is Isolation/dust-proof glove box; No transfer box; Not vacuum in glove box; It could be replaced by inert gas. Type B: It could be vacuum in the transfer box and vacuum degree reach -0.1mpa; It couldn’t vacuum in the main box; It could be replaced by inert gas. Type C: It could be vacuum in the main box and transfer box; Limit vacuum degree can reach -0.1mpa; It could be replaced by inert gas.