... welcome All components are made in-house PZ-06004 Full Metal Gear Box Dongguan PingZheng Technology Co., Ltd is a manufacturer ... motors and electronic landing gears. We mainly manufacture fine-pitch metal gears and plastic gears. There are Mold Dpt, Injection Dpt ... , Metal Processing Dpt, Engineering Dpt, QC Dpt, Assembly Dpt. We can ...