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Old 09-21-2021, 04:17 AM
Silly Moustache Silly Moustache is offline
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Join Date: Apr 2006
Location: The Isle of Albion
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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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Silly Moustache,
Elderly singer, guitarist, dobrolist and mandolinist.
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