Industrial control hardware is bought on service life rather than price per unit. That changes what a supplier has to get right: the board has to keep its numbers across a decade of thermal cycling, and the same board has to be obtainable again when a machine is rebuilt — not re-engineered around whatever parts happen to be current that year.
What industrial boards have to survive
A drive cabinet heats and cools every day, a factory floor vibrates, and a wash-down area adds humidity. So the design pressure comes from thermal cycling, creepage distance, mechanical load on connectors and the finish that has to survive the environment — not from squeezing the smallest trace onto the panel. Where heat cannot leave through a heatsink, a metal-core or ceramic section does the work; where the cabinet is sealed, the coating matters as much as the copper. The published process limits are on the capability page and apply to every industry, so they are not repeated here.
Repeat production is the real test
Most industrial programmes are not one order. A machine is built, then rebuilt, then supported as a spare part five years later, and each of those batches has to match the first. That is why the order is quoted from the original stack-up and files, with the same finish and the same placement programme, rather than starting again from a parts list.
Components are the part that moves. When a device on the BOM goes obsolete or is allocated, the alternative is proposed in writing before the order is accepted, so the substitution is a documented decision the customer can approve — not something discovered at incoming inspection.
Where the electronics end and the box begins
Control boards carry parts the SMT lines cannot place: terminal blocks, DIN connectors and large electrolytics. Those go through the DIP lines with wave soldering, after which cable and harness assembly and box build happen in the same plant. A control unit can therefore leave as a built and wired sub-assembly, already tested as a unit rather than as a pile of boards and a separate harness order.
Records, confidentiality and visits
Fabrication and assembly share one plant, so a single lot record covers the bare board, the material batch and the assembled unit. The certificates behind that record — ISO 9001:2015, ISO 14001, ISO 45001 and UL file E354070 — are scanned on the certifications page, and the inspection sequence is on quality assurance.
Drawings that cannot be shared openly can travel under a mutual NDA from the first exchange, and a visit to the Shenzhen or Meizhou plant can be arranged around the processes the board would run on. Payment is by bank transfer (T/T), with goods quoted EXW Shenzhen or DDP.
Next step
Send the Gerber set, the stack-up requirements, the BOM if assembly is included, the quantity, and the enclosure or panel dimensions when box build is in scope. Board families used in control work have their own pages — heavy copper, multilayer and aluminium metal-core — and box build covers the step after assembly. Controls that share the cabinet with inverters and battery systems are described under renewable energy PCBs, the rest of the industries we serve are on the industries page, and a quote can be requested on the contact page.
