You are a visitor of battery maker website, and at some point, you come across of blurry test reports and certifications.
What all this documentation worth for gaining customer trust?
NOTHING ...
Battery production this is a non-stop daily task, equal to a bakery selling every day fresh bread.
Test reports they are generated when a customer wish to buy large quantity, and few samples of the specific batch, they get tested mostly for compliance about hazardous materials, and or for safety compliance about due Air transportation.
Test reports cost money, and a new scamming industry, this is copying old test reports, so to cheat and avoid the costs.
Test reports labs they are legit, but they are scared too, they have a long list as
Declaration Long story in sort, they say, we tested few samples, and we have no responsibility of other batch of products.
The test report is invalid without the signatures of Ratifier, Reviewer and Testing engineer.
Objections to the test report must be submitted to us within 15 days.
Nobody is allowed to photocopy or partly photocopy this test report without written permission of us.
The test report is valid for the tested samples only.
The test report is invalid if altered. How much it worth an test report this be few months old? = NOTHING

Why a factory this will deliver at a Test reports lab, an fake contacts email ? = Neither AI this has so much imagination so to come down with an answer.

In INDIA two Chinese battery makers started shipping inferior products, after obtaining BIS (India) certificate. Some sort equivalence to CE.
INDIA canceled both certificates, and these battery makers they cannot trade with INDIA any more.