Where can I buy Li Rongbiao's stair chair?

Li Rongbiao's stair climbing wheelchair can be bought in official website, Beijing Jinyun Century High-tech Co., Ltd. According to relevant information, official website, Beijing Jinyun Century High-tech Co., Ltd. now sells stair climbing wheelchairs normally and enjoys the right to return them for seven days without reason. Li Rongbiao founded Beijing Jinyun Century High-tech Co., Ltd. in 2007. The hand-held electric multifunctional stair chair filled a gap in the domestic market and won three national patents.