Suzhou Gongyeyuanqusidadejixiezikong Fluid Machinery Co., Ltd.

Suzhou Industrial Park Stard Machinery Automation Co., Ltd. (STARD GEARS) is a Chinese manufacturer of valve gearboxes and valve drive devices, founded in 1999 with registered capital of RMB 10.8 million. Located in Suzhou Industrial Park in the Yangtze River Delta, the company has 8,900 square meters of production and office space and an annual output of more than 100,000 valve drive devices across nine product series with over 80 models.

The product range covers manual valve gearboxes, multi-turn bevel gear boxes, clutch handwheel gearboxes, gearboxes for motorized valves, high-efficiency worm gearboxes with Backstop self-locking devices, custom valve gearboxes, and pneumatic actuators in linear-stroke and fork-type designs. Quality is controlled from incoming castings through machining to shipment by dedicated inspection staff, with full testing equipment supporting torque and life tests and IP67 verification. Products are exported to the United States, Canada, Italy, Mexico, the UAE, Russia, Singapore, and Japan, with long-term partnerships including Crane and Warren Valve.