Custom Case & Bag Manufacturing Guides
Practical guides for B2B buyers covering materials, design, sampling, testing and mass production.
Latest Manufacturing Guides
Functional Bags
Insulin cooler temperature display and factory data logger
The finished insulin refrigerator uses a simple display screen for real-time monitoring. Pengtour uses a separate three-probe data logger for factory sample testing.
pengtour Oct 14 2026
Functional Bags
Where should the gel packet be placed in an insulin refrigerated bag?
Pengtour placed two 75-gram gel packets under a foil-lined tray for four pen samples and checked the air temperature on the left, middle, and right sides.
pengtour Oct 14 2026
Functional Bags
Travel insulin cooler box design: What materials need to be sent before OEM sample production?
A practical OEM travel insulin cooler briefing covering actual load, cooling targets, gel packs, internal layout, and sample testing methods.
pengtour Oct 14 2026
Eva Case
Custom EVA Instax Mini 12 Case Design: Fit, Film Storage, and Sample Checks
A B2B guide to turning an Instax Mini 12 camera, film packs, batteries and straps into a clear EVA case RFQ and sample record.
pengtour Oct 14 2026
Eva Case
Custom EVA Speaker Case Design: Fit, Layout, and Sample Checks
A B2B guide to turning a portable speaker, charger and cables into a clear EVA case layout, sample review and RFQ.
pengtour Oct 14 2026
Functional Bags
Tote Bag Handles: How Buyers Should Specify Drop and Attachment
A B2B guide to turning tote handle geometry, body attachment and realistic loaded-sample review into an approvable specification.
pengtour Oct 13 2026