I. Product Positioning & Functional Needs

Automotive diagnostic tools usually include a main unit, cables, OBD connectors, power adapters, and manuals. Therefore, the storage case is not just a container, but also a functional integrator and protection carrier.

Key buyer requirements:

Protection: compression resistance, shock absorption, waterproofing, and dust resistance;

Space management: separate compartments for main device and cables to prevent squeezing or tangling;

Portability: handles, shoulder straps, lightweight design suitable for technicians on the go;

Branding: customized logo, colors, and professional appearance to enhance brand identity.

II. Structure & Craftsmanship Essentials

1) Common Structures

EVA thermoformed shell: usually laminated with Oxford fabric or PU; lightweight and impact-resistant, the mainstream option for diagnostic cases.

Hard cases (ABS/PC/PP): strong impact resistance, suitable for heavy diagnostic tools or multi-tool kits.

Soft bags (nylon/polyester/canvas): lightweight and flexible but less protective, often used as accessory or cable pouches.

2) Internal Design

Die-cut inserts (EVA, pearl cotton, high-density foam): precision slots for stable device and connector placement.

Mesh pockets/elastic bands: for cables and adapters, avoiding tangling.

Double-layer designs: main unit in the upper layer, accessories in the lower, for better organization.

3) Craftsmanship & Quality Points

Thermoforming: shells must be flat, with no bulging or weak pressing.

Zippers: ≥3,000 cycles without jamming or tooth loss.

Reinforcement: stress points on handles and shoulder straps must use bartack stitching.

Water resistance: fabric coating + reversed zippers to achieve splash/dust protection.

Color fastness & abrasion resistance: withstands workshop oil stains and frequent handling.

III. Procurement Priorities & Process

1) Supplier Selection

Certifications: ISO 9001, IATF 16949 (required by some OEMs), BSCI/SEDEX for social compliance.

Material compliance: REACH, RoHS, phthalates-free, nickel-release reports.

Development capability: ability to provide 3D simulation and EVA insert designs from CAD drawings.

Quality management: incoming, in-process, and outgoing QC.

Lead time management: standard 25–35 days, with ability to support both small trial runs and mass production.

2) Sampling & Pilot Production

Requirement freeze: confirm tool size, number of accessories, and compartment layout.

Sample validation: fit testing, drop test, abrasion test, zipper cycle test.

Pilot run (PVT): verify mold stability, process consistency, and yield.

Inspection standards: recommend AQL 2.5 (major defects) / 4.0 (minor defects).

3) Cost & Delivery Factors

Material choices: PU vs. nylon, EVA density → 10–20% cost differences.

Design complexity: multi-layer structures, more compartments, custom pulls/plates increase unit cost.

MOQ & tooling fees: EVA molds require one-time investment; clarify amortization.

Packaging & logistics: must meet e-commerce or sea-freight standards (compression and moisture resistance).

IV. Compliance & Trends

1) Regulatory Requirements

Chemicals: EU REACH, RoHS, California Prop 65.

Flammability: some OEMs require FMVSS 302 compliance for tool bag interiors.

Environmental responsibility: growing demand for rPET/GRS-certified fabrics under ESG policies.

2) Market Trends

Lightweight design: reduces burden for field technicians.

Modular compartments: replaceable inserts to fit different tool models.

Eco-materials: rPET nylon, water-based PU, fluorine-free DWR coatings.

Brand customization: unique colors, logos, and molds as part of aftersales value.

V. Example Procurement Checklist

Diagnostic tool model & size: __________

Case type: EVA shell / ABS hard case / nylon soft bag

Internal structure: EVA insert / mesh pocket / dual layers

Outer material & color: PU / nylon / rPET, PMS code __________

Zipper: water-resistant / standard, custom puller Y/N

Logo: silk print / deboss / metal plate

Compliance: REACH / RoHS / Prop 65 / FMVSS 302

Packaging: color box / shipping carton / e-commerce pack

Quantity & lead time: sample __ days; mass __ days; MOQ: _____ pcs

Trade terms: EXW / FOB / CIF

VI. Conclusion

For automotive diagnostic tools, the storage case is not only a matter of cost efficiency, but also a professional brand extension. By carefully selecting suppliers, conducting strict sample validations, and ensuring compliance, buyers can secure reliable supply chains that balance quality, sustainability, and differentiation.