Changzhou South Drive Technology CO.,LTD covers an area of 50 acres, with a factory area of 20000 square meters. We are specialized in manufacturing gear & gearbox, pinion shaft, bull gear, internal gear ring, sand casting aluminum alloys, die casting aluminum alloys, dedicated to serving domestic and international customers from oil industry, natural gas, industrial cooling towers, coal mining, engineering machinery, rail transit, metallurgy, wind power and other fields. Adhering to "professional cast transmission and build the future with quality" as our company vision.