If you are an individual user, you can find ways to solve the problem through the following ways:
1, directly to the manufacturer of the wheelchair, call the after-sales service department to contact the solution or you can ask the manufacturer in the vicinity of your residence there is no product agent point of sale.
2, go to the store selling rehabilitation equipment to consult (there are many in the medical neighborhood), before going to take a good picture of the required accessories to bring along.
3, major pharmacies that sell wheelchairs
4, on Baidu, Taobao, Tmall, Jingdong and other large online shopping platform to find .
Hope to help you.