Factory Overview

Factory-direct manufacturing is only valuable if it delivers what overseas buyers actually need: consistent batches, stable lead times, and communication you can rely on.

Since 2010, COSUN has built our production flow around repeatability - from disciplined assembly standards to export-ready packing checks.

Faster launch cycles (prototype -> validation -> mass production)
Stable replenishment (repeatable process + controlled revisions)
Practical quality evidence (inspection checklists, test logic, photo confirmations)
Export-ready packing and carton marking
Factory Overview
Factory OverviewFactory Overview

10 Production Lines & Work Cells

SMT / PCBA Line

Controlled PCB assembly including placement + soldering profiles, with SPI/AOI.

THT / Hand-Solder & Rework Cell

Manual refinement and controlled rework to keep yield stable.

Cable & Harness Prep

Cutting, stripping, crimping, and continuity checks.

Plastic Parts Fit Control

Incoming checks + fit verification for housings and clips.

Metal Parts Processing / Hardware Prep

Metal part checks and assembly preparation for stable mechanical tolerances.

Car Charger Assembly Line

Process checkpoints aimed at reducing heat and connection complaints.

Cigarette Lighter Socket Assembly

Contact stability, assembly consistency, and packaging protection.

Phone Holder Assembly

Clamp stability, surface protection, and holding performance.

100% Functional Test Line

Functional checks plus visual inspection before outgoing shipment.

Aging / Burn-In Line

Detect early failures before products ship.

Quality Discipline That Protects Your Brand

  • ESD control where it matters to protect sensitive electronics.
  • Inspection logic aligned to buyer expectations (AQL-aligned sampling where applicable).
  • Documented checkpoints and photo confirmations when needed.

What You Can Expect

  • Clear checkpoints, clear revision control, clear next steps.
  • Production photos or videos when needed for alignment.
  • Stable execution designed for repeat orders, not one-time wins.

Export-Ready Packing & Shipping Support

A good product can still fail if packing fails. We support channel-appropriate packaging (bulk vs retail), carton marking, and protection planning.

  • Custom Carton Marking
  • Palletization Support
  • Drop-Test Compliant Packing
Export-Ready Packing & Shipping Support

Next Step

Request Factory Photos & Videos

We will send real production visuals and a capability overview relevant to your product category.

Request Samples

Stock samples or branded samples to verify fit, finish, and performance before you scale.