CPTPP: UK has joined Asia's trade club but what is it?

The key perk is greater access to each others' markets, and a pledge to eliminate or reduce 95% of import charges or tariffs.But some are kept to protect sensitive domestic areas, such as Japan's rice farming industry.Also, manufacturers that get components from lots of different places can claim their products qualify for preferential treatment.That means they can tick the so-called "rules of origin" box, as…