... 1. ISO9001:2008 2.manufacturer 7 years 3.zf gear box(caja de cambios zf) 4.5S111GP,S690,QJ805,5S150GP,S580,etc. ... operation rights4 industry of our company:Chinese manufacturer of ZF transmission gearbox assembly and related parts for heavy-duty truck ... 16S and so on.7 Our main products:Gearbox aseembly, transmission, gear, sliding sleeve, synchronizer hub, synchronizer body, Synchronizer cone, ...