Acco are still making chain but also now have a line of 'Premium imported' chains. There was a batch of boats in the Caribbean
with rust issues last year and it looks to have been the imported, which is most likely means ex-china.
And don't forget the US (and Australia
to a degree) runs it's own standard with regards to chains rather than use what the rest of the world does. So that means the links can physically different in measurement, the terminoligy used is often different, the Safety
margins are often different and are many other things like markings.
A note on markings - They used to be handy but these days it can be hard to trust many. Give me 3 months and I can have your anchor
chain arrive at your boat
with the boats name stamped on it. 2 years ago I asked a manufacturer in one country 'So what markings does the chain have?' in relation to a high tensile one. The reply was 'What markings would you like us to put on it?'
We have Grade 30 marked chain being sold
here but put it to the test and it's only just a Grade 20.
Many reputable manufacturers don't have G40 or such like markings, they often use markings that denote who made it. Maggi is one. They use marking like MC, MC-IT or A7, actually the A7 chain is a grade 70. The MC standing for Maggi Catene, Maggi being the family
name and catene being the Italian word for chain. You'll see one Aussie manufacturer uses PWB a lot, they are called PWB Anchor
It's best to concentrate on who makes it rather than the markings these days. We all are reasonably aware at what countries can be trusted a little more than others. Ask for a Test Certificate. If it has a lot of weird numbers it's probably OK, if it looks like a spreadsheet your kids
knocked up... Hmmmm maybe not so believable.