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Long-Term Investment
6 Months Ended
Jun. 30, 2025
Long-Term Investment [Abstract]  
Long-term Investment

8. Long-term Investment

  

In 2020, the Company made an initial investment of $2.87 million in exchange for a 19% limited partner interest in Shandong Ningwei New Energy Technology Co., Ltd. The investment was accounted for using the cost method due to the lack of readily determinable fair value in 2025.

 

During the six months ended June 30, 2025 and 2024, the Company recognized Nil impairment loss for long term investment. As of June 30, 2025 and December 31, 2024, the balance of long-term investment was $1,653,392 and $1,622,654, respectively.