the quality of machine ism important to running credibility and product quality.
2) The cover track has the device to prevent the reversal cover from passing and pick out the reversal cover. Meanwhile the photoelectric switch can stop the machine automatically when there is no cover on the track, by which it can avoid bottle without cover effectively.
3) It also has the bottle check-up switch. Together with cylinder on the joint of the cover track and cover lift, they can control the cover flow