Factory strength is usually described with a floor area and a monthly capacity. Both matter, but neither tells a buyer what happens to a lamp between raw aluminium and a sealed carton. This is that walk, station by station.

Station 1: Die-Casting

Housings arrive as raw castings. Buyers should look at wall thickness at the mounting points and the machined gasket groove. A groove that is cast rather than machined will not compress a seal evenly, and that is where water enters two years later.

Station 2: Powder Coating

Coating thickness decides how the fixture looks after a coastal season. Ask for the coating specification and check the inside edges, which are often missed.

Station 3: SMT

LED boards are populated on the SMT line. The relevant questions are chip bin, solder quality and whether boards are tested before assembly. A board that passes visually can still have a cold joint that fails in thermal cycling.

Station 4: Module Assembly

Driver, sensor and wiring go into the housing. This is where cable routing and gland sealing are decided. Buyers should check that cables are strain-relieved and that the gland is threaded, not a push-fit grommet.

Station 5: Aging Test

Every finished unit runs under load before packing. A factory that skips this stage ships its defects to the customer. Ask how long the run is, what is monitored, and what happens to a batch when one unit fails.

Station 6: Quality Inspection

Final inspection should include a light-up test, a seal check and a label audit. The label matters more than it looks: a model number that does not match the BOM creates warranty disputes later.

Station 7: Packing

Lamp head and bracket are packed separately to avoid pressing on the lens. Foam end caps protect the corners; a double-wall carton survives transshipment. Buyers shipping to island or inland markets should ask for a drop test reference.

Station 8: Container Loading

Loading is the last chance to catch a paperwork error. A photo set of the pallets, the carton labels and the container seal is cheap insurance against a dispute at destination.

The Numbers Behind the Walk

The base covers 68,000 m² with a monthly capacity of about 1,200 LED street lights, and the production scope runs from die-casting and powder coating to SMT, assembly, aging and export packing. Capacity matters because a multi-container order can be phased; the traceable test reference matters because the technical file can go straight into a tender.

A factory visit is not a tour. It is a sequence of small inspections, each of which predicts a different failure mode.