Three men have been charged over their alleged involvement in a plot to import more than 1.2 tonnes of liquid methamphetamine into Queensland, concealed in juice bottles.

The AFP launched its investigation in May after the Canada Border Services Agency (CBSA) allegedly identified the illicit drugs hidden in juice bottles, which had arrived in Vancouver from Brazil.

The liquid methamphetamine was removed from the packages and replaced with an "inert substance".

The shipment then continued to Brisbane, where it arrived at the beginning of September.

Three men, aged 30, 35 and 43, were arrested after the consignment was delivered to a semi-rural property in Jimboomba and stored in a large shed.

They were charged with attempting to possess a commercial quantity of an unlawfully imported border controlled drug and have been remanded in custody.

The AFP said its investigations focused on a international crime syndicate that allegedly attempted to import 1,280 litres of liquid methamphetamine.

It said this amount, once converted into crystal methamphetamine, could have equated to $4 million in individual street deals. 

Tests by Canadian police allegedly showed the liquid methamphetamine had a purity level of 89 per cent.

AFP Acting Commander Adrian Telfer said the interception shows the importance of a strong relationship between international authorities in the fight against methamphetamine

"Through this operation the AFP, working with our partners in Canada, has prevented a large amount of this illicit drug from reaching our communities and causing harm," he said.

The three men will appear again in the Brisbane's Magistrates Court this week.