Exchange Buyer hereby acknowledges that Seller desires and intends to structure this transaction as a tax-deferred exchange pursuant to Section 1031 of the Internal Revenue Code, as amended Accordingly, Buyer shall, at no additional cost, obligation, or liability to Buyer, cooperate with and assist Seller in perfecting such an exchange, provided that the consummation of the transaction contemplated hereby is not thereby delayed by fault of Buyer

Exchange Subject to the terms hereof, either party may effect a like-kind exchange under Section 1031 of the Internal Revenue Code of 1986, as amended (the “Code”) Accordingly, each party agrees that it will cooperate with the other to effect a tax-free exchange in accordance with the provisions of Section 1031 of the Code and the regulations promulgated with respect thereto, provided same shall not delay the Closing, unless agreed to by the other party in its sole discretion The exchanging party shall be solely responsible for any additional fees, costs or expenses incurred in connection with the like-kind exchange contemplated by it pursuant to this Paragraph 25, and neither party shall be required to incur any debt, obligation or expense in accommodating the other hereunder In no event shall either party’s ability or inability to effect a like-kind exchange, as contemplated hereby, in any way delay the Closing or relieve the other from its obligations and liabilities under this Agreement Each party hereby agrees to indemnify and hold harmless the other from any liability, losses or damages incurred by the other in connection with or arising out of the [Section 1031] like-kind exchange of the exchanging party, including but not limited to any tax liability This Paragraph 25 shall survive Closing

Exchange. Subject to the conversion election set forth in this Section 2, the Company agrees to issue to the Holder 695,728 shares of Series A Convertible Preferred Stock of the Company (the “Series A Preferred Stock”) with the terms set forth in the certificate of designation of preferences, rights and limitations (the “Certificate of Designation”) that is attached hereto as [Exhibit B] and incorporated herein by reference, in exchange for the Notes (including all outstanding but unpaid principal and interest). On the Closing Date, the Company shall file the Certificate of Designation with the State of Delaware and shall deliver to the Agent (as defined in the Certificate of Designation) evidence of such filing and the acceptance thereof by the State of Delaware, which shall be reasonably satisfactory to the Agent, and shall deliver to the Holder an original Series A Preferred Stock certificate dated as of the Closing Date in the name and denomination of shares of Series A Preferred Stock set forth on the signature page hereto within ten Trading Days from the Closing Date. Provided, however, a Holder may within two Trading Days after the Closing Date provide a written notice to the Company that such Holder is electing to convert all or part of the Note(s) held by such Holder pursuant to the terms of such Note. In the event a Holder elects to convert all or a portion of such Holder’s Notes, such Holder shall not be entitled to any shares of Series A Preferred Stock with respect to the portion of the Notes so converted and this Agreement shall be deemed null, void and of no further force or effect with respect to the portion of the Notes so converted.

Exchange. On the terms and subject to the conditions set forth in this Agreement, at the Closing # Shareholders will sell, convey, transfer and assign to Hainan ​, free and clear of all liens, pledges, encumbrances, changes, restrictions or known claims of any kind, nature or description, and ​ will purchase and accept from Shareholders, 74.52% of currently issued and outstanding equity of AUFP, in the aggregate (the “AUFP Equity”), in the individual amounts as set forth on [Schedule A], and # in exchange for the transfer of such securities by the Shareholders, ​ will sell, convey, transfer and assign to Shareholders or the third party Shareholders appoint, and Shareholders will purchase and accept from ​, fourteen million (10,432,800) newly-issued shares of common stock of ​, par value $0.001, in the aggregate (the “​ Shares”), in the individual amounts as set forth on [Schedule A] (such exchange referred to herein as the “Exchange”). Upon completion of the Exchange, 74.52% of AUFP Equity shall be held by ​ through Hainan ​. ​ Shares will be 100% of issued and outstanding shares of common stock of ​, par value $0.001.

In consideration of and in express reliance upon the representations, warranties, covenants, terms and conditions of this Agreement, the Holders agree to deliver and surrender to the Company: # certificates representing 200,000 shares of Common Stock, and # and, for cancellation, 2,368,658 Warrants, in exchange for an aggregate total of 1,976,494 shares of Series C Preferred (the “Exchange Shares”), and the Company agrees to issue and deliver the Exchange Shares to the Holders.

The Company shall, as soon as practicable after the execution of the Transaction Support Agreements (but in no event later than the fifth business day after the date of filing of the Company’s Annual Report on Form 10-K for the year ended December 31, 2015), commence the Registered Convertible Note Exchange Offer (pursuant to Rule 162 under the Securities Act) and file with the SEC # a registration statement under the Securities Act to register the Registered Convertible Note Exchange Offer (the “Convertible Note Exchange Registration Statement”) and # all other filings required under the Exchange Act with respect to the Registered Convertible Note Exchange Offer (including, without limitation, a Statement on [Schedule TO]) (the “Other Filings”). The Company shall use all commercially reasonable efforts # to have the Convertible Note Exchange Registration Statement declared effective by the SEC and # to cooperate with the SEC to complete its review or comment process with respect to the Other Filings, in each case, as soon as practicable.

there is now no registration statement on file with the Securities and Exchange Commission with respect to the offer and sale of any stock of the Company, and the Company has no obligation or current intention to register the offer and sale of the Incentive Shares under the Securities Act.

Registration. If Shares are issued in a transaction exempt from registration under the Securities Act of 1933, as amended, then, if deemed necessary by Company’s counsel, as a condition to the Company issuing the Shares, the Employee shall represent in writing to the Company that the Employee is acquiring the Shares for investment purposes only and not with a view to distribution, and Restrictions shall be imposed on the Shares to the effect that such Shares may not be transferred without an applicable exemption under the Securities Act of 1933 or registration thereunder.

REGISTRATION. The Company will use reasonable efforts to prepare and file and use reasonable efforts to cause to be declared effective or otherwise become effective pursuant to the Securities Act no later than August 31, 2023 a Registration Statement or post-effective amendment to an existing Registration Statement in order to provide for resales of the Registrable Securities to be made on a delayed or continuous basis pursuant to Rule 415 under Act (subject to the availability of a Registration Statement on Form S-3 or any successor form thereto). “Registrable Securities” shall mean the Notes and the shares of Common Stock issuable upon conversion thereof; provided, any such securities shall cease to be Registrable Securities when # they have been sold or otherwise disposed of pursuant to an effective Registration Statement or in compliance with Rule 144 or # they cease to be outstanding; provided, further, that any security that has ceased to be Registrable Securities in accordance with the foregoing definition shall not thereafter become Registrable Securities and any security that is issued or distributed in respect of securities that have ceased to be Registrable Securities are not Registrable Securities.

that certain letter agreement Re: Reload Offer of Common Stock Purchase Warrants, dated as of July 29, 2021, by and between ​ and ​; and