A 23-YEAR-OLD man was jailed for 18 years yesterday for possessing 750 grams of the drug ''ice'' for trafficking. Andy Cheng King-ho denied the charge, but was found guilty by a High Court jury. He earlier pleaded guilty to possessing four stun guns. Senior Crown Counsel Mr James Dick called evidence that the drugs were found at Cheng's home on January 11 last year. Cheng testified that on the evening before his arrest he had a drink with another man, who said he had to meet someone and asked if he could leave a black, plastic bag at Cheng's house. Cheng agreed, knowing the stun guns were inside. He claimed he did not know the bag contained drugs. In mitigation, Mr Gary Plowman QC, said the guidelines for sentencing on offences involving ''ice'' were horrific. He urged the judge to consider that Cheng was young and had a clear record. Passing sentence, the judge said ''ice'' had serious, permanent effects on users and the Court of Appeal believed the drug to be more serious than heroin. Cheng was sentenced to 18 years for the drugs charge and two years for possessing the stun guns, to run concurrently.