EVST: One Factory Building Welding Robots, Delta Arms and Palletizers

When a buyer opens the 以物思 / EVST catalog for the first time, the obvious question is: why does one factory build track-mounted welding robots, delta-arm packers and warehouse palletizers all at once? The answer is in how automation demand actually works on a typical Chinese factory floor — rarely does a plant need just one robot for one task; it almost always needs a line built from several different kinematic families covering different operations in the same shop.

A certification most competitors don't have

EVST was founded in 2018, with production sites in Chengdu and Wenling. It was the first company in China to certify explosion-proof industrial manipulators — critical for oil-and-gas work and for shops with combustible dust (metalworking, food production). Part of the lineup is also offered in a moisture-resistant version. EVST's payload range runs from 3 to 800 kg, it exports to more than 100 countries, and part of the lineup carries CE certification.

Four welding stations, each built for a different part geometry

EVST's welding lineup isn't one robot — it's four different layouts for different part geometries. The EVS CS14V10 travels on a tracked crawler right up to large steel structures, with a 36.5 kVA station power rating and travel speed up to 1 km/h. The gantry station rides an overhead frame, giving an extended work envelope for long, elongated parts. The nine-axis cantilever station adds three external axes (a turntable plus linear travel) to the robot's own six — a part gets welded on every side without re-fixturing. The seven-axis rail station rides a linear rail module, serving multiple fixtures in sequence along a line.

Three delta-robot series — plus palletizers to match

Beyond welding, EVST builds three variants of its Zhi-series delta robots (Zhi Hua — baseline high-speed packing of light items off a conveyor; Zhi Kong — with built-in machine vision for coordinate-based sorting; Zhi Sheng — the senior model with a larger work envelope for heavier, bulkier items), plus SCARA arms for assembly and screwdriving of small parts, cobots for cageless work, 4- and 6-axis industrial arms, and palletizers that stack boxes onto pallets to a set pattern.

What this means in practice

For a buyer, that range under one roof isn't a marketing gimmick — it's real savings on logistics and service: a welding station, a delta packer for finished goods and a palletizer for shipping can all come from the same factory, with the same lead time (4-7 weeks) and a single service contact, instead of three separate suppliers for three stages of one production chain. More detail on EVST's specific welding-station models is in the factory's catalog card: payload ranges, layouts, lead times.

Takeaway

EVST is a good example of a single Chinese factory covering several stages of a production chain at once — from welding large structures to packing and palletizing finished goods. For buyers choosing equipment for a specific shop floor rather than for abstract "automation," a wide catalog from one factory is often simpler to procure than assembling a line from several different suppliers.

These factories are on the route of our Robotics Expedition — see them in person, not just on video.