Sourcing phone cases from China

Artwork, characters and photographs. A factory will print whatever file you send and will also offer you a catalogue of designs it prints for others. Neither is evidence that anybody holds a licence. If the design is not yours, get the licence in writing and check what it covers — territory, product category, term, and whether it permits manufacture in China.

Registered designs on the case itself. A distinctive case shape or detail can be a registered design in your destination market, so "the same as the one that sells well" is a sentence with a legal consequence. Ask the factory whose design it is; the answer is not a defence, but it tells you what you are dealing with.

Counterfeit and brand marks. Cases carrying a handset maker's branding, a fashion brand's marks or a sports team's badges are a different order of problem, and customs seizure is the ordinary outcome rather than the unlucky one. A supplier offering these is telling you what kind of supplier they are.

Attachment ecosystems. Magnetic attachment systems and their names are trademarks and, in several cases, licensed programmes. A case that works with a magnetic system is a technical fact; a case that uses that system's name is a licensing question with a different answer.

This page describes where the risk sits and is not legal advice. If a design is not unambiguously yours, take advice for your destination market before production — it is far cheaper than a seizure, a takedown or a claim.

It is also why this marketplace does not list phone cases. The category is switched off deliberately, because a factory-only marketplace that publishes listings cannot verify a licence chain it never saw, and the honest response is not to list rather than to list with a disclaimer.

What the standard actually is. MIL-STD-810 is a family of environmental test methods — temperature, humidity, vibration, shock and others — written to be tailored to a specific programme. It has no pass/fail authority, no certifying body and no accreditation scheme, so no product is "certified" to it and no supplier can certify one.

So a claim of "military grade drop protection" describes a marketing phrase rather than a test result, and once your brand is on the box it is your claim. Marketplaces and advertising regulators increasingly treat unsupported protection claims as exactly that.

What to do instead: define your own test. Drop height, the surface — concrete is very different from a laboratory floor — the orientations including corners, the number of drops, whether the device inside is a real handset or a dummy of matched mass, and the criterion that counts as a pass. Then have a laboratory run it to your definition and quote your own test in your listing.

Be specific about what is protected. A case can protect the back and fail at the corner, protect the corner and let the screen contact the floor, or protect everything and be too bulky to sell. A raised lip around the screen and camera is a design decision worth specifying explicitly.

And test with the real handset. Case behaviour depends on the mass and stiffness of what is inside it, so a drop test on an empty case tells you almost nothing.

Yellowing. Clear cases going yellow is the most predictable long-term complaint in the category, and it is a material choice: some polyurethane chemistries discolour under ultraviolet light and heat, and others resist it far better. Specify the material family and require an accelerated ultraviolet and heat ageing test with a colour-change criterion — and be sceptical of "non-yellowing" as an adjective without a test behind it.

Fit tolerance. Cutouts for cameras, buttons and ports either line up or they do not, and the tolerance stack between the case tool and the handset is small. Require samples checked against a real handset of the exact model, not a dimensional drawing, and check the button feel through the case rather than only the alignment.

Surface finish and grip. Soft-touch coatings degrade into tackiness in warm humid conditions, printed patterns rub off at the edges, and a case that is beautiful and slippery is a case that causes the drop it was bought to prevent.

Wireless charging and magnets. Case thickness and any metal plate affect wireless charging, and an added magnet ring changes both attachment and charging behaviour. Test with the charger and the handset your customers use, not on a bench pad.

And the SKU problem, which is commercial rather than technical: cases are cut per handset model, handset ranges change every year, and unsold stock for a discontinued model is worth nothing. That inventory risk, not the unit price, is what decides whether a case programme makes money.

Business licence and business scope (经营范围) first — a manufacturer's registered scope names production. Then ask what they mould in-house, who owns the tools, and whether the design they are offering you is theirs.

The specification: material family and grade with the ageing requirement; wall thickness and lip heights; cutout tolerances checked against a real handset; surface treatment; printing method and its abrasion requirement; magnet arrangement if any; the drop test to your own definition; and packaging.

The paperwork: restricted-substance declarations naming your model, and — where the design or artwork is not unambiguously yours — the licence, its territory, its term and its product scope, in writing, before production.

Then sample against a real handset of the exact model, age one under ultraviolet light and heat, drop several with a mass-matched device to your own protocol, and check the fit of every cutout and the feel of every button through the case.

Every supplier listed on this site is a manufacturer, and the registered-scope check is one of the things confirmed before a listing goes live — but cases are not listed at all, and that is a deliberate decision rather than a gap.