Hidden inside toothpaste, chocolates, cakes, shoes and clothes, the class-C drug was allegedly sent from China to the homes of associates. It was then turned into methamphetamine. Enough pseudoephedrine to make P worth $5 million was seized in police raids.
The 16 defendants have denied the charges. All but three of those charged with methamphetamine charges have been committed for trial.
Inmates Arthur Taylor and Ernest Tofaeono have not conceded a prima facie case, nor has Tai Bong Rhee, who is accused of organising the pseudoephedrine supply from China.
Judge McNaughton will decide next week whether the trio will stand trial.
Police allege Taylor was a leading figure in the syndicate, as were Wanzhe Gui and senior King Cobras member Rocky Pulete. Gui was believed to have made more than $1 million profit, according to a conversation overheard by police.