How to legally avoid UK VAT for Ltd?

[polonieth]

So if it's a UK ltd, products from China, customers in UK, no VAT?

Assuming the company in China is posting them directly to customers, that's correct. They fall outside the scope of VAT, instead, the importer pays VAT so in this example that is the customer, in which case if the item is more than £15, they will pay something prior to delivery.