Last month. We successfully tested our newly developed automatic double stacked bike racks in our factory. It can load weight up to 40 kg without any effort. As heavy e-bikes are becoming more and more popular in most countries while the market for heavy e-bikes is still blank. We developed the products according to the requirement of the market. The whole system is very smart. There are 10 upper racks and 20 lower racks for each configuration. The button indicators of all the upper racks keep on when the upper racks are on the top/bottom. If one of the upper racks is in operation state. The button indicators of the rest 9 upper racks keep off. If the lower bike rack is moving toward the upper rack in operation, the upper bike rack in the operation will stop immediately.