How about Langfang Blue Valley Wisdom?

Reliable. Gu Lan Wisdom (Beijing) Energy Technology Co., Ltd. Langfang Branch was established in 2020, located in Langfang City, Hebei Province, and is an enterprise mainly engaged in technology promotion and application services. Business scope: intelligent power exchange facilities and key accessories for new energy vehicles, electrochemical energy storage, technology development and technical consultation for stepped utilization of retired power batteries, etc. The enterprise is legally registered and certified by the Ministry of Industry and Information Technology, holds formal and legal business documents, and is a legal enterprise, so it is reliable.