Royal Mail case study5 Oct 2017 08:47
https://hardide.com/news/
Royal Mail case study
Perhaps there where some design changes to the deflector blades. Hence the time taken 'several months to develop and test'. This Hardide stuff is meant to be 'hard'. What's all the testing about. Might be a bit naive but it's just bits of paper whizzing about int it.
I would have hoped that by now the coating is like Ronseal 'it does what it says on the tin', When is it going to be at a stage of 1) Order 2) Coat 3) JUST USE, No development, No testing.
regards
RRJ