Yantai Ruichuang Micro-Nano Technology Co., Ltd. Tentative Announcement on "Ruichuang Convertible Bonds" Expected to Meet Redemption Conditions

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Stock code: 688002 Stock abbreviation: Retech Micro & Nano Announcement No.: 2026-013

Bond code: 118030 Convertible bond abbreviation: Retech Convertible Bond

Yantai Retech Micro & Nano Technology Co., Ltd.

An Announcement on the Expected Fulfillment of Redemption Conditions for the “Retech Convertible Bond”

The board of directors and all directors of the Company hereby guarantee that this announcement contains no false statements, misleading information, or material omissions, and assume legal responsibility in accordance with law for the authenticity, accuracy, and completeness of the contents.

Key Information:

● From March 18, 2026 to March 31, 2026, the Company’s shares of Yantai Retech Micro & Nano Technology Co., Ltd. (hereinafter referred to as the “Company”) have, over 10 trading days, had closing prices not lower than 130% of the prevailing conversion price (i.e., RMB 50.856 per share). If, in the future, within 20 consecutive trading days, on 5 trading days the Company’s share closing prices are not lower than 130% of the prevailing conversion price (including 130%), then the conditional redemption provisions stipulated in the “Yantai Retech Micro & Nano Technology Co., Ltd. Prospectus for the Issuance of Convertible Corporate Bonds to the Public” (hereinafter referred to as the “Prospectus”) will be triggered. The Company shall have the right to decide to redeem all or part of the “Retech Convertible Bond” that has not yet been converted at a price equal to the par value plus accrued interest for the current period.

Pursuant to the relevant provisions of the “Shanghai Stock Exchange Listed Company Self-Regulatory Guidance No. 12—Convertible Corporate Bonds,” the Company hereby announces the relevant circumstances under which the conditional redemption provisions of the convertible corporate bonds may be triggered as follows:

I. Overview of the issuance and listing of the convertible bond

Pursuant to the reply issued by the China Securities Regulatory Commission regarding “Approval for the Registration of Yantai Retech Micro & Nano Technology Co., Ltd. for the Public Offering of Convertible Corporate Bonds” (CSRC License [2022] 2749), the Company issued convertible bonds to the public in the amount of 15,646,900 lots, with each lot having a par value of RMB 100, issued at par value. The total proceeds from this issuance of convertible corporate bonds were RMB 1,564,690,000 (including issuance costs), and the actual net proceeds were RMB 1,554,790,600. All of the above proceeds have been received. ShineWing Certified Public Accountants (Special General Partnership) conducted verification of the receipt of proceeds for this issuance and issued the “Verification Report of Yantai Retech Micro & Nano Technology Co., Ltd.” (XYZH/2023BJAA1B0001).

With approval from the Shanghai Stock Exchange’s “Self-Regulatory Decision Letter [2023] No. 19,” the Company’s RMB 1,564,690,000 convertible corporate bonds began trading on the Shanghai Stock Exchange on February 10, 2023. The bond abbreviation is “Retech Convertible Bond,” and the bond code is “118030.”

Pursuant to the relevant provisions and the terms of the Company’s “Prospectus for the Issuance of Convertible Corporate Bonds to the Public,” the Company’s “Retech Convertible Bond” issued herein is convertible into the Company’s shares starting from July 6, 2023.

The initial conversion price of the “Retech Convertible Bond” is RMB 40.09 per share. Given that the Company has completed the share registration work for the second vesting period of the first grant and the first vesting period of the reserved grant under its 2020 restricted stock incentive plan, resulting in the Company’s total share capital changing from 446,023,750 shares to 447,300,000 shares; and given that the Company implemented its 2022 annual equity distribution, the conversion price of the Retech Convertible Bond was adjusted from RMB 40.09 per share to RMB 39.92 per share; and given that the Company has completed the vesting registration procedures for the third vesting period of the first grant and the second vesting period of the reserved grant under its 2020 restricted stock incentive plan, resulting in the Company’s total share capital increasing from 447,304,079 shares to 448,438,515 shares, and the conversion price of the Retech Convertible Bond was adjusted from RMB 39.92 per share to RMB 39.87 per share; and given that the Company implemented its 2023 annual equity distribution, the conversion price of the Retech Convertible Bond was adjusted from RMB 39.87 per share to RMB 39.75 per share; and given that the Company implemented its 2024 interim equity distribution, the conversion price of the Retech Convertible Bond was adjusted from RMB 39.75 per share to RMB 39.70 per share; and given that the Company completed the vesting registration procedures for the first vesting period of the first grant under its 2022 restricted stock incentive plan, resulting in the Company’s total share capital increasing from 450,833,346 shares to 454,922,651 shares, and the conversion price of the Retech Convertible Bond was adjusted from RMB 39.70 per share to RMB 39.52 per share; and given that the Company completed the vesting registration procedures for the fourth vesting period of the first grant and the third vesting period of the reserved grant under its 2020 restricted stock incentive plan, resulting in the Company’s total share capital increasing from 454,922,802 shares to 455,971,925 shares, and the conversion price of the Retech Convertible Bond was adjusted from RMB 39.52 per share to RMB 39.47 per share; and given that the Company completed the share registration procedures for the second vesting period for the second vesting period of the first grant under its 2022 restricted stock incentive plan for the first time and the first vesting period of the reserved grant, resulting in the Company’s total share capital increasing from 455,971,925 shares to 456,962,515 shares, and the conversion price of the Retech Convertible Bond was adjusted from RMB 39.47 per share to RMB 39.43 per share; and given that the Company implemented its 2024 annual equity distribution, the conversion price of the Retech Convertible Bond was adjusted from RMB 39.43 per share to RMB 39.35 per share; and given that the Company completed the share registration procedures for the second vesting for the second vesting period of the first grant under its 2022 restricted stock incentive plan, resulting in the Company’s total share capital increasing from 456,962,540 shares to 460,237,540 shares, and the conversion price of the Retech Convertible Bond was adjusted from RMB 39.35 per share to RMB 39.21 per share; and given that the Company implemented its 2025 interim equity distribution, the conversion price of the Retech Convertible Bond was adjusted from RMB 39.21 per share to RMB 39.13 per share; and given that the Company completed the share registration procedures for the vesting of the fourth vesting period of the reserved grant under its 2020 restricted stock incentive plan, resulting in the Company’s total share capital increasing from 460,238,329 shares to 460,441,639 shares, and the conversion price of the Retech Convertible Bond was adjusted from RMB 39.13 per share to RMB 39.12 per share.

II. Conditional redemption provisions and the triggering circumstances

(I) Redemption provisions

Pursuant to the Company’s “Prospectus,” the redemption provisions for the “Retech Convertible Bond” are as follows:

1. Redemption at maturity provisions

Within five trading days after the maturity of the convertible corporate bonds issued in this offering, the Company will redeem the unconverted convertible corporate bonds at a price of 110% of the par value (including interest for the last period).

2. Conditional redemption provisions

During the conversion period of the convertible corporate bonds issued in this offering, if, in at least 15 of the 30 consecutive trading days, the closing prices of the Company’s A-share stock are not lower than 130% of the prevailing conversion price (including 130%), or if the outstanding balance of unconverted convertible corporate bonds in this offering is less than RMB 30 million, then the Company shall have the right to redeem all or part of the unconverted convertible corporate bonds at a price equal to the par value plus accrued interest for the current period.

The formula for calculating accrued interest for the current period is: IA = B × i × t / 365

IA: refers to the accrued interest for the current period;

B: refers to the total face value amount of the convertible corporate bonds of this offering held by the bondholders that are to be redeemed;

i: refers to the annual coupon rate for the convertible corporate bonds for the current year;

t: refers to the number of days of interest, i.e., the actual number of calendar days from the day after the previous interest payment date to the redemption date in the current interest year (counting the first day but not the last day).

If, during the aforementioned 30 trading days, any circumstances arise that cause adjustments to the Company’s conversion price, such as ex-rights, ex-dividends, etc., then for trading days before the conversion price adjustment date, the conversion price and closing price before the adjustment shall be used for calculation; for trading days on and after the conversion price adjustment date, the adjusted conversion price and closing price shall be used for calculation.

(II) Expected triggering of the redemption provisions

From March 18, 2026 to March 31, 2026, the Company’s shares have, over 10 trading days, had closing prices not lower than 130% of the prevailing conversion price (i.e., RMB 50.856 per share). If, in the future, within 20 consecutive trading days, the Company’s shares have closing prices not lower than 130% of the prevailing conversion price on 5 trading days (including 130%), the conditional redemption provisions stipulated in the Prospectus will be triggered.

Pursuant to the relevant provisions, such as the “Shanghai Stock Exchange Listed Company Self-Regulatory Guidance No. 12—Convertible Corporate Bonds,” and other relevant regulations, on the trading day when the redemption provisions are triggered, the Company will convene a meeting of the board of directors to deliberate and decide whether to redeem all or part of the “Retech Convertible Bond” that has not yet been converted at a price equal to the par value plus accrued interest for the current period. Before the market opens on the next trading day, the Company will disclose an announcement regarding redemption or non-redemption.

III. Risk warning

The Company will, in accordance with the terms of the Prospectus and requirements of relevant laws and regulations, after the redemption provisions for the “Retech Convertible Bond” are triggered, determine whether to redeem the “Retech Convertible Bond,” and promptly fulfill its information disclosure obligations. Investors are kindly requested to fully understand the redemption provisions for the convertible bond and their potential impact, and to pay attention to the Company’s subsequent announcements, and to take note of investment risks.

This announcement is hereby issued.

Yantai Retech Micro & Nano Technology Co., Ltd.

Board of Directors

April 1, 2026

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