Multifix 312, 322 and 304: What is the difference?

In this video, Daniel explains the differences between the mitre kits that Multifix stock and which option is best for you. 

You can buy the products mentioned in this video here:
Anti-yellowing Multifix 304: https://multifixuk.com/products/100g-400ml-multifix-304-mitre-adhesive-kit
Premium Multifix 322: https://multifixuk.com/products/50g-200ml-mitre-adhesive-kit
Trade Multifix 312: https://multifixuk.com/products/50g-200ml-multifix-312-mitre-adhesive-kit