Adopt two-stage vacuum calibrating device, a set of two section 22 x 8, finalize the design of six group vacuum valves regulating system, six groups with vacuum pump, four filtering device
independent control temperature adjusting device group. Finalize the design the surface by polishing and not sticky, center height with optional adjustment function, have the function of direction
move out.
Adopt two-stage vacuum calibrating device, a set of two section 22 x 8, finalize the design of six group vacuum valves regulatin