Dog collars and harnesses

I’d like to start up my own little dog collar and harness company but I’m really struggling to find manufacturers. I’ve spent the weekend going through pages and pages of Alibaba and I can’t quite find what I want. There are a few UK brands that are definitely using the same manufacture because their designs are IDENTICAL. But I’m running out of ideas of how to find who they’re using (I actually want to do something a bit different to stand out, but thought a good starting point would be to find their manufacture).

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Any advice or tips please?

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Brands below:

https://www.houndsofeden.co.uk/collections/ready-to-ship-dog-harnesses

https://popandted.co.uk/collections/dogharness

https://www.barnabyandjones.com/collections/harnesses

https://www.rosieandjo.co.uk/harnesses