Security Notice: Important Advisory Regarding Fraudulent Emails

Dear Valued Customers and Partners,

We are writing to alert you to a security issue concerning fraudulent emails circulating in the market. Recently, we discovered that unauthorized parties have been impersonating the CEO of Micro Sensor Co., Ltd. ("Micro Sensor") to send fake business proposals and cooperation requests via email.

lease be assured that your security and our business relationship are our top priorities. To help protect your organization from potential scams, please keep the following in mind:

1. No Direct CEO Outreach for Solicitations: Micro Sensor has never authorized any individual or external party to issue business solicitations under our CEO’s name. Please exercise caution if you receive any unsolicited proposals from unknown email addresses.

2. Verify Before Replying: If you receive a suspicious email claiming to be from our CEO, please do not reply, click any links, or follow any payment instructions. Instead, verify its authenticity through our official channels listed on our website (Website: English web：https://www.microsensorcorp.com; Chinese web: https://www.microsensor.cn/; Tel: +86-29-88346384/400-082-0660; Email: sales@microsensor.cn).

3. Official Communications Only: All genuine business communications, contracts, and updates from Micro Sensor are conducted strictly through our authorized corporate channels. Any communication from unauthorized sources does not represent Micro Sensor.

We take corporate identity theft very seriously and are actively working with law enforcement to address this matter.

Thank you for your vigilance, understanding, and continued trust in Micro Sensor. If you ever have doubts about the authenticity of a message you receive, please reach out to us right away.

Warm regards,

Micro Sensor Co., Ltd.

August 26, 2026