Contract Assembly Services
Source to Ship in One Factory

Four main categories: (1) Mechanical sub-assembly — combining machined/sheet/plastic parts into a functional unit with fasteners and Loctite. (2) Electromechanical — adding wiring, PCBs, motors, sensors to mechanical hardware. (3) Box build / turnkey — complete product assembly from BOM, ready to ship to end customer. (4) Kitting and pre-packaging — matched component sets for service kits or distribution.

Either. For mechanical components we either machine in-house (CNC, sheet metal, plastic molding) or source from our vetted vendor network. For electronic components (PCBs, semiconductors, displays) we typically source per your BOM with named-supplier approval — we don't substitute parts without your sign-off. You can also supply parts directly if you have existing inventory or vendor relationships.

Per-unit assembly labor typically $1-$25 depending on assembly complexity and step count. Simple 5-step mechanical assembly: $1-3/unit. Complex electromechanical with testing: $8-25/unit. Box build with custom packaging: $5-15/unit + packaging. Material cost is separate. The cost driver is mostly assembly time per unit + test cycles.

No fixed MOQ. We routinely assemble batches as small as 10 units for pilot runs or low-volume products. Small batches (10-100 units) have higher per-unit labor cost (no economies of scale on training/setup); medium batches (500-5,000 units) get our best per-unit pricing.

Yes — we integrate PCBs into mechanical assemblies with crimping, soldering (hand and selective), harness routing, connector termination, and continuity testing. We don't fabricate PCBs (we source those from board houses), but we install them. ESD-controlled assembly environment available on request. AS9100 process available for aerospace electromechanical assemblies.

Yes. Standard inline QC sampling per AQL 1.0 (general inspection level II). For products requiring 100% test (medical devices, safety-critical assemblies), we set up a test station with pass/fail criteria you define. Functional tests, leak tests, electrical continuity, dimensional checks — all documented per unit. Failed units are quarantined for engineering review.

First Article Inspection (FAI) on lead unit. Process records per build (torque values, test pass/fail, lot numbers, build date). Material certs and supplier documentation aggregated. Certificate of Conformity for the finished assembly. RoHS/REACH/Conflict Minerals declarations on request. ISO 13485 DHR (Device History Record) for medical.

Yes. We can fulfill from our Dongguan facility direct to your end customer with your branding, your packaging, and your return address — invisible to the customer that we're in the supply chain. Sea or air freight per cost / urgency. Returns / RMA handling included for production-volume clients on request.

Pilot batch (5-25 units): 2-3 weeks from BOM approval. First production batch (100-500 units): 3-4 weeks after pilot approval. Steady-state cadence: weekly or per your forecast. We don't gate by volume — we'll do 50 units/week or 5,000 units/week using the same quality system.

Yes. Foam inserts (custom-cut to your part geometry), branded boxes (printed to your art), polybags with custom prints, ESD-safe packaging for electronics, multi-pack consolidations. Packaging cost is per-unit + a one-time tooling cost ($300-$2,000 depending on print method and packaging complexity). We design and source packaging end-to-end.