our newly developed automatic vertical lifting bike racks are very user-friendly. When the lower sliding racks are moving towards the lifting upper racks, the upper racks will stop moving instantly to avoid any collision. When the upper racks hit the barriers under the upper racks, the upper racks will go up automatically. The button light flashes when the upper racks are moving which indicates user that the upper racks are moving. It will stop moving as soon as you push the button light again. The pilot products have been in use for almost half a year. We will put them into volume production as soon as there are no issues during the test.