Hangzhou Chang Chuan Technology Co.Ltd(300604) : special verification opinions of Huatai United Securities Co., Ltd. on the cumulative rise and fall of Hangzhou Chang Chuan Technology Co.Ltd(300604) share price within 20 trading days before the reorganization suspension

Huatai United Securities Co., Ltd

About Hangzhou Chang Chuan Technology Co.Ltd(300604) share price before restructuring and suspension

Special verification opinions on the cumulative rise and fall within 20 trading days

Huatai United Securities Co., Ltd. (hereinafter referred to as “independent financial consultant”) is entrusted by Hangzhou Chang Chuan Technology Co.Ltd(300604) (hereinafter referred to as “listed company”) to act as its independent financial consultant for issuing shares, purchasing assets, raising supporting funds and related party transactions. According to the notice on regulating the information disclosure of listed companies and the behavior of relevant parties (Zheng Jian Gong Si Zi [2007] No. 128) and other relevant laws and regulations, the independent financial consultant has verified the stock price fluctuation of listed companies before the suspension of stock restructuring. The relevant verification is explained as follows:

The trading of shares of listed companies (stock abbreviation: Hangzhou Chang Chuan Technology Co.Ltd(300604) , stock code: Hangzhou Chang Chuan Technology Co.Ltd(300604) . SZ) has been suspended since the opening of the market on January 10, 2022. The cumulative rise and fall of Listed Companies in the 20 trading days before the suspension and the cumulative rise and fall of gem index (Code: 399006. SZ) and CSI semi guide industry index (Code: 931081. CSI) in the same time interval are as follows:

The 21st trading day before the suspension of the project, the rise and fall of the last trading day before the suspension

(202112-09) (202201-07)

Closing price of the company’s shares (yuan) 56.88 49.75 – 12.54%

Gem index (399006. SZ) 345932309688 – 10.48%

CSI semi Guide (Code: 542865475085 – 12.49%)

931081.CSI)

Excluding the impact of market factors, it rose -2.06%

Decline

After excluding the influence of the same industry sector -0.05%

Fluctuation range

The share price of listed companies fell by – 12.54% during the above-mentioned period, and the decline was – 2.06% after excluding the factor that the gem index fell by – 10.48%; Excluding the factor that the CSI semiconductor industry index fell by – 12.49%, the decline range was – 0.05%. Therefore, the cumulative decline of the company’s share price in the 20 trading days before this transaction, after deducting the factors of the market or the sectors of the same industry, did not exceed 20%, and there was no abnormal fluctuation.

After verification, the independent financial adviser believes that after excluding the influence of market factors and industry sector factors, the cumulative rise and fall of the share price of the listed company in the 20 trading days before the first announcement date of this transaction are more than 20%, and there is no abnormal fluctuation.

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(there is no text on this page, which is the seal page of the special verification opinions of Huatai United Securities Co., Ltd. on the cumulative rise and fall of Hangzhou Chang Chuan Technology Co.Ltd(300604) share price within 20 trading days before the reorganization suspension) financial advisor sponsor:

Cheng Yang, Tao Jinsong

Huatai United Securities Co., Ltd

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