Our group of companies, Chongqing Threetas International Trading Co., Ltd. - the biggest trading co. In the automotive field in town, and Chongqing IIYOU Industries, Ltd. - truck gearbox, synchronizer cmonents and assemblies, ZF & Fuller, and axle components quality manufacturer - are foreign (Sino-Italian) JVs located in Chongqing, southwest China.

As Threetas, our main business is for bevel gears (crown wheel and pinions, differential parts, reducers assembling) to USA and Far East, gearbox components (casting iron parts, aluminum covers, bearings and syncronizers, clutch bodies, sliding slleves) to Europe, as well as Chinese trucks (HOWO gearbox) replacements to Middle East (HOWO & Dongfeng trucks).

As IIYOU Industries we serve OEM USA with ring gears for industrial applications, ZF, Mercedes, Fuller and HOWO gears, shafts, synchronizer assemblies, synchronizer rings, clutch bodies, slidind sleeves to some Italian manufacturer companies, manufactured according to their drawings.

We deliver good quality parts along with the inspection reports issued by our tech dept like we are doing for the OE companies.

Regarding service, we usually arrange and ship full containers from Chongqing to Shanghai by vessel on the Yangtze river, and we fill out all the documents and form A to enable the customs clearance, as well as we arrange the express courier with the original B/Ls to the final destination.