China Protective Case Factory Tour: What B2B Buyers Should Verify
B2B buyers visiting China case factories should verify 8 critical points: tooling, materials, QC station, certifications, capacity, lead time, IP testing, AQL procedures.
Direct answer: A 1-day factory tour at Kexin covers 8 critical checkpoints: (1) Tooling room with mold storage, (2) Material warehouse with PP/ABS/PC stock, (3) Injection molding floor (40+ machines), (4) Foam cutting workshop, (5) Assembly line, (6) IP testing station, (7) AQL inspection station, (8) Packaging and export prep. Allow 2-3 hours per checkpoint for proper verification.
8 Critical Checkpoints
1. Tooling Room
Check: number of molds, mold material (steel vs aluminum), last maintenance date, mold traceability. Kexin: 200+ molds, hardened steel, preventive maintenance every 5,000 cycles, mold ID engraved on every part.
2. Material Warehouse
Check: PP/ABS/PC pellets with brand labels (Sinopec, SABIC, etc.), humidity-controlled storage (≤30% RH), FIFO rotation. Kexin: 3-month material inventory, all branded pellets, climate-controlled storage.
3. Injection Molding Floor
Check: machine brand (Haitian, Engel, Sumitomo), tonnage range (90-1,600 tons), automation level, central material handling. Kexin: 45 Haitian machines (90-1,600 tons), automated resin handling, real-time production monitoring.
4. Foam Cutting Workshop
Check: CNC water-jet, pick-and-pluck pre-cut, foam density range. Kexin: 2 CNC water-jets (cut tolerance ±0.2mm), 4 pick-and-pluck pre-cuts, PU foam density 33/45/60 kg/m³, ESD foam available.
5. Assembly Line
Check: hinge installation, latch installation, gasket placement, pressure test. Kexin: 6 assembly lines, 180+ workers, AQL 2.5 inspection at each station.
6. IP Testing Station
Check: IP54/IP65 spray nozzles, IP67/IP68 immersion tanks, test report generation. Kexin: dedicated IP test room (3 spray stations, 2 immersion tanks), automated test report generation.
7. AQL Inspection Station
Check: ISO 2859-1 sampling tables, AQL 2.5 vs 1.0 documentation, photo documentation capability. Kexin: certified QC engineers, digital photo documentation, customer-arranged inspection welcome.
8. Packaging & Export Prep
Check: PE bag + EPE foam + 5-ply carton + pallet, export documentation, fumigation certificate. Kexin: standard 5-ply export carton, palletized, ISPM-15 compliant for EU/US, container loading 20ft/40ft.
FAQ
How long is a typical factory tour?
1-day tour (6-8 hours) covers all 8 checkpoints. Allow 2-3 days for full evaluation (visit 2-3 candidate factories, 1 day each). Kexin provides airport pickup, lunch, and English-speaking guide.
What documents should I bring?
Passport, business card, sample drawings/specs of your project, list of questions per checkpoint, USD 100-200 cash for small gifts to QC team. Kexin provides NDA template if needed.
Can I bring a third-party inspector?
Yes. SGS, BV, TUV inspectors welcome. We provide free factory tour, free inspection station, free sample selection. Customer pays inspector fees (USD 200-400/day) and travel.
What if I can't travel to China?
Video tour available via WeChat/Zoom. Kexin engineering team walks you through all 8 checkpoints via live video, with real-time Q&A. Per-batch production photos + videos provided. Third-party inspection (SGS/BV) before shipment available at customer cost.