EXHIBIT INDEX Exhibit Description of Exhibit 99.1 Joint Filing Agreement Exhibit 99.1 JOINT FILING AGREEMENT The undersigned hereby acknowledge and agree that the foregoing statement on Schedule 13G/A is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G/A shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning itself or himself contained herein and therein, but shall not be responsible for the completeness and accuracy of the information concerning the other, except to the extent that he or it knows or has the reason to believe that such information is inaccurate. [Signature page to follow] IN WITNESS WHEREOF, the undersigned hereby execute this agreement as of February 12, 2019 Kingkey New Era Auto Industry Limited By: /s/ Chen Jiarong Name/Title: Chen Jiarong, Director Kingkey New Era Auto Industry Global Limited By: /s/ Chen Jiarong Name/Title: Chen Jiarong, Director First Tycoon Ventures Limited By: /s/ Chen Jiarong Name/Title: Chen Jiarong, Director Sail Best Investments Limited By: /s/ Chen Jiarong Name/Title: Chen Jiarong, Director Kingkey Investment Group Limited By: /s/ Chen Jiarong Name/Title: Chen Jiarong, Director Chen Jiarong By: /s/ Chen Jiarong Name: Chen Jiarong
