According to a report from the Financial Times on August 1, 2025, information from the State Intellectual Property Office showed that Hubei Deyi Fertilizer Co., Ltd. obtained a patent called "A Crane Collector Mounting Rack", with authorization announcement number CN223175682U and application date of October 2024.

The patent abstract shows that the utility model provides a crane-mounted current collector mounting frame, comprising: a vertical hanging portion, the top of which is connected to the crane; a horizontal support frame, which is arranged at the bottom of the vertical hanging portion and is perpendicular to the vertical hanging portion; a relay mounting frame, which includes a slidable transverse support frame arranged at the front end of the horizontal support frame, and a lifting support frame arranged on the top of the transverse support frame, which is capable of being raised and lowered. The lifting support frame is used to mount the crane-mounted current collector. By arranging a relay mounting frame on the horizontal support frame and allowing it to move and rise laterally, the entire current collector system can be easily moved outside the crane, thereby facilitating the maintenance of the current collector and improving the convenience of maintenance. At the same time, when removing the inner current collector, there is no need to remove the outer current collector first, which greatly improves the maintenance efficiency.

According to Tianyancha data, Hubei Deyi Fertilizer Co., Ltd., established in 2022 and located in Yichang City, is a company primarily engaged in the manufacturing of chemical raw materials and chemical products. Its registered capital is 40 million RMB. Tianyancha's big data analysis reveals that Hubei Deyi Fertilizer Co., Ltd. has invested in one company and participated in seven bidding projects. Its property information includes three trademarks, 15 patents, and 12 administrative licenses.