Also. This seems to be a joint venture. The more I read the more it makes sense. Pretty crafty actually.

) Strategic Cooperation Agreement (i) Upon request by the Seller and mutual agreement on the terms, Denselight shall be a distributor for the Seller and for certain of the Seller's products to companies based in the PRC; (ii) Denselight will continue work on certain development projects identified in the Strategic Cooperation Agreement, with ownership over such projects to be jointly owned with the Seller, until their natural completion, or until end June 2020, whichever occurs sooner; (iii) Denselight will offer test services to the Seller at a cost-plus basis, subject to capacity availability, for one year after the Closing Date; and (iv) The Seller may provide optical interposer solutions to Denselight for Denselight’s sensing market after the Closing, subject to a NRE cost-plus fee at reasonable commercial terms,

So it looks like the buyer would like to use the OI for sensing purposes. In all or part. And the buyer will reimburse the Seller for any improvements made from Feb 3,2019. The day before the announcement of sale. My point is they have been on board all along.

REIMBURSEMENTS Capital Equipment 6.1 The Buyer agrees and accepts that the Seller has advanced funds to Denselight for capital equipment, specialised installation of such capital equipment and capital improvements, as listed in Schedule 8, for Denselight's benefit since February 3, 2019 ("Capital Equipment, Installation and Improvement Fees"). The Parties agree that any further advancement of funds by the Seller for capital equipment, specialised installation of capital equipment and capital improvements during the Interim Period shall require the prior written consent of the Buyer. 6.2 No later than 1 month prior to the Closing Date, the Seller shall deliver to the Buyer: (a) a list of all capital equipment and installations and the total Capital Equipment, Installation and Improvement Fees expended by the Seller as of Closing Date, together with the purchasing contracts and/or invoices related to the payment of such Capital Equipment, Installation and Improvement Fees; and (b) a monthly repayment schedule for the Capital Equipment, Installation and Improvement Fees to be reimbursed to the Seller in full by December 1, 2020 by equal monthly payments commencing on December 1, 2019 or on the first day of the month immediately following the Closing Date (if the Closing Date is later than December 1, 2019). 6.3 The Buyer undertakes to direct Denselight to reimburse the Seller the sum of the Capital Equipment, Installation and Improvement Fees according to the monthly repayment schedule in Clause 6.2(b).