Two decades making pneumatic couplings and fittings in Ningbo, China.
Established on 1 March 2005 in Shitang Village, Gaoqiao Town, Haishu District, Ningbo, JIAJIE Pneumatic began as a small workshop making pneumatic quick couplers. More than twenty years on, we still concentrate on that same craft: the machined parts that keep compressed-air systems connected and running.
We are a focused 15-person factory with in-house turning, assembly and inspection — not a trading company and not a giant plant. That is deliberate. It lets us take on trial runs and mixed orders that larger factories decline, answer enquiries the same day, and ship samples in days rather than weeks. Being roughly 40 km from the Port of Ningbo keeps export shipping fast and economical.
Six inspection steps on every batch. Certification documents available on request — tell us which standards your market requires.
Tight-tolerance CNC turning for custom fittings and small-batch prototypes.
Pressure and leak testing, thread gauging and dimensional checks done on site, batch by batch.
From your sketch to CAD drawing to mass production — engineering team ready.
Your logo, your colors, your packaging. Laser engraving and silk-printing both available.
Blister, box, carton, pallet — packed to your retail or industrial spec.
FOB / CIF / DDP by sea, air or express. Located about 40 km from the Port of Ningbo.
Beyond couplers and fittings, our range now includes air-powered industrial tools — engineered, machined and inspected in-house.

High/low-speed, 90° angle, extended-shaft and quiet models — 18 SKUs for deburring, porting and polishing.
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Twin-hammer 1/2" & 3/4", single-hammer and ratchet wrenches for tyre, body and assembly work.
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3" / 4" angle grinders, cut-off tools, shears and nibblers for cutting and grinding.
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10 mm & 20 mm belt sanders for shaping, smoothing and detail finishing on metal and wood.
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2-bearing and 3-bearing air pens for marking, engraving and fine surface work.
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Straight, angle and reciprocating scalers for rust, paint and weld cleaning.
View specs →We welcome B2B clients year-round. We can also send a video tour and reference customer list.
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