Huawei Technologies: The photolithography photoresist substrate business accounts for less than 2% of the company's total revenue.

Huasu Technology Announcement: The company has noticed that the concept of "photoresist" has received high market attention recently. The company's main business is research, development, production, and sales of fine chemical products, with main products including paper chemicals, pharmaceutical/agrochemical intermediates, fluorescent whitening agents, and electronic chemicals. Among them, electronic chemicals accounted for less than 6% of the company's total revenue in 2024. As for the photoresist base material business, the company currently produces and sells photo initiators in small quantities according to customer orders, with the revenue from this product accounting for less than 2% of the company's total revenue in 2024. The impact on the company's operating performance in the past two years has been minimal, and future sales are subject to significant uncertainty due to various factors. Investors are advised to be aware of investment risks and invest rationally.