Thread: Cutting into a Martin makes me ask about what is Martin HPL
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Old 09-21-2021, 04:17 AM
Silly Moustache Silly Moustache is offline
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HPL ?

AndrewG is a former chemist and tends to understand such things far better than I , but I thought I'd add this :

https://plasticsheetsshop.co.uk/what-is-hpl/
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