... , with high-pressure electrostatic plastic-sprayed surface.Phone panel is provided with 4 x 4 display enhanced keyboard, intrinsically ... selection, can provide 32 pairs of users at the same time.Is the rope way most models.3, strong independence: each ... (room temperature)3, the atmospheric pressure: 80-110KpaThree, technical parameters1, executive standard: GB3836.1-2000, GB3836.2-2000, GB3836.4-2000 ...