Chongqing Lianhao Technology Co., Ltd.

Chongqing Lianhao Technology Co., Ltd. was established in 2015 with a registered capital of 80 million yuan. The company is located in the Fenghuanghu Industrial Park in Yongchuan District, covering an area of 120 mu. It is a company specializing in the production of automotive differential assemblies and components, transmission shaft products, and other automotive parts. Its main customers include top-tier OEMs such as SAIC Motor, GAC Group, Great Wall Motor, and Changan Automobile.
The company has introduced Swiss GF high-speed milling machines and related mold manufacturing equipment, and possesses the capability to develop precision forging molds and processes for differential gears and transmission shafts. It now holds more than 20 applied technology patents, including 5 invention patents, in areas such as bevel gear forging and welding of ductile iron and low-carbon alloy structural steel for differentials.
The welded differential produced by the company features a compact structure, lightweight design, high precision, and simplified manufacturing process. Its advantages are prominent compared with traditional bolt-connected differentials, and it has broad market application prospects. At the same time, the company has introduced a full set of testing equipment including German Wenzel WGT280 gear testing centers and Wenzel LH65-1200 coordinate measuring machines, and has established a scientific quality management system in accordance with the IATF16949:2016 standard. It has successively introduced complete sets of gear shaft precision forging, heat treatment, machining, welding, assembly production lines, and testing equipment from developed countries such as Germany and Switzerland, including three fully automatic warm forging gear production lines and one fully automatic cold forging transmission shaft production line from Germany's Schuler, Komatsu finishing presses from Japan, EMAG CNC lathes from Germany, Aichelin carburizing and quenching heat treatment lines, Aichelin press quenching production lines, DISA shot blasting machines, KLINK broaching machines from Germany, Liebherr gear grinding machines from Germany, and EMAG laser welding machines from Germany (with online ultrasonic flaw detection). It has an annual production capacity of 28 million differential gears, 7 million transmission shafts, and 3 million differential assemblies.
In December 2017, the company signed a cooperation agreement with Germany's Liebherr to jointly establish a gear research institute to advance the research and development of high-precision transmission gears required for new energy vehicles. The company has established good cooperative relationships with companies such as Liebherr, EMAG, and Wenzel of Germany, and conducts extensive exchanges and cooperation in the research and development, manufacturing processes, equipment, and testing of key components for new energy vehicles.