Applied Optoelectronics (AAOI) 8-K Entry into a Material Definitive Agreement

Exhibit 10.1

Approval Notice of Credit Line

I. Regarding the related transactions between your company and the Bank, the transaction conditions approved by the Bank are as follows:

Amount Unit: One thousand NTD

Transaction Type	Credit Line	Interest Rate	Usage/Note
1.    Comprehensive Credit Line	100,000
(1) Short term loan - Import0/A	(100,000)	Negotiable on a case-by-case basis	1. Revolving loans 2.120-dayrepayment period 3. The current reference rate for120-day period is2.2% 4. A copy of theInvoice must be obtained before the loan can be issued; credited in full amount; the remittance restricted only to the suppliers (must not be enterprises/individuals)
(2) Short term loan	(100,000)	Negotiable on a case-by-case basis	1. Revolving loans 2.90-dayrepayment period 3. The current reference rate for90-day period is2.25%
2.      Financial DerivativesCredit Line - Hedging	USD 1,000	Negotiable with Financial Marketing Department	1. Shall restrict only for spot transactions in the foreign exchange market. 2. The part of the hedging amount that exceeds 30% of the MTM loss needs to be replenished with margin or deposit within two business days.
Total	100,000+ USD 1,000		Maturity Date:July 31,2020
Additional (special) conditions: 1.    From August 1, 2019, the Bank will quarterly check and review if the amount of your company’s average deposit during each quarter (exclude the cash deposited in the account and pledge of a banking deposit) is more than or equal to30% of the average credit amount during each quarter. 2.    From August 1, 2019, the Bank will quarterly check and review if the amount of the fund transfer between you and your non-related parties during each quarter is more than or equal toUSD 2 million. 3.    Please provide the Quarterly Consolidated Financial Statements of your parent company (“AOI”) before August 31, 2019 and November 30, 2019, and March 15, 2020 and May 31, 2020 for the Bank’s reference. 4.    Before the loan can be issued, aletter of responsibility issued byPrime World International Holdings Ltd. shall be required. 5.    At the end of each quarter (March,May,August,and November), theApplied Optoelectronics, Inc.'s shareholding in Prime World International Holdings Ltd. shall be checked, which must not be less than100%. 6.    Other matters not mentioned herein shall be governed by the Bank's related policy.

II. Under the above-mentioned conditions, if there are difficulties obtaining the funds due to market factors, or these conditions cannot properly reflect the costs of the Bank's acquisition for the related funds, the Bank reserves the rights to make the adjustments in a timely manner to the amounts of the loan, usage, and the re-determination of the loan interest rates.

III. We kindly request your company/your good self to check with the relevant documents for signing and other matters.

Kind Regards

Customer Confirmation with Signature

The company/I have fully understood the above content and agreed that it is a part of the agreement signed with the Bank.

Prime World International Holdings Ltd.

Taiwan Branch

Date: July 8, 2019