Exhibit 1
JOINT FILING AGREEMENT
The undersigned agree that this Schedule 13G, and any amendments hereto, relating to the ordinary shares, par value of US$0.0001 per share of Lianhe Sowell International Group Ltd, a Cayman Islands exempted company with limited liability whose principal place of business is in Shenzhen, China, shall be filed on behalf of the undersigned.
| August 11, 2025 | |||
| Lianhe Holding Group Limited | |||
| By: | /s/ Dengyao Jia | ||
| Name: | Dengyao Jia | ||
| Title: | Director | ||
| Hainan Lianhe Enterprise Management Group Co., Ltd. | |||
| By: | /s/ Dengyao Jia | ||
| Name: | Dengyao Jia | ||
| Title: | Director | ||
| Patten Holding Group Limited | |||
| By: | /s/ Dengyao Jia | ||
| Name: | Dengyao Jia | ||
| Title: | Director | ||
| Dengyao Jia | ||
| By: | /s/ Dengyao Jia | |