was established in 2005. We are a professional high-tech companyspecialized in R&D, manufacturing, sales and service for police Bluetooth communication systemand devices.

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Carbon sign Innovation Co., Ltd. was established in 2024, headquartered in Shenzhen, the innovation capital of China. It is a high-tech enterprise dedicated to providing the advertising signage industry with comprehensive automation solutions for the entire 3D printing process. The company was founded by industry experts who have been deeply involved in the advertising signage field for over twenty years. Leveraging a profound understanding of traditional processes and a precise grasp of market needs, it aims to drive industry transformation through innovation in 3D printing technology. Focusing on the entire automation chain from design to production of small-scale signage as its core business, the company is committed to revolutionizing the sector.

Guangdong South China Institute of Environmental Protection Industry Technology Co., LTD. (hereinafter referred to as "South China Institute") is a new research and development institution and a new think tank specialized in environmental technology industrialization established in response to the national high-quality development strategy and the spirit of high-level ecological protection, with a paid-in capital of 50.01 million yuan.

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Shenzhen Infell Electronics Co., Ltd Established in 2009, we are a professional enterprise engaged in the development and manufacturing of home appliance controllers and consumer electronics products, with our main products being PCBA and remote controllers. The company is headquartered in Shenzhen, China and has established branches in Vietnam, Pakistan, and India. Specializing in the production of BLDC fan controllers, air-cooled controllers pcb¡¢ Advanced products such as washing machines and smart remote controls.