TOJOIN Tech Co., Ltd, established in 2006 in Shenzhen, Guangdong, China, is a subsidiary of Zhongji Technology Group Co., Ltd. As a leading manufacturer and supplier of ICT detection equipment in the Asia-Pacific region, we specialize in manufacturing, supplying, and exporting innovative RF and electromagnetic solutions.
Our products include GNSS multi-system satellite signal simulators, electromagnetic shielding boxes, RF shielded rooms, millimeter wave connectors, and microwave instrument accessories in a wide portfolio. We have wholly-owned subsidiaries in Suzhou, Qianhai, and Hong Kong where we constantly work towards innovation and quality excellence. With state-of-the-art R&D facilities, strategic partnerships with universities, and adherence to international quality standards such as ISO 9001:2008 and CE certification, we deliver solutions that simplify complex testing processes while exceeding customer expectations. Our company stands as a benchmark for precision, innovation, and trust in the RF and electromagnetic industry.