A ParknShop storeroom assistant in the Wong Tai Sin Shopping Centre saw two traders move dozens of boxes of baby formula into their vehicles, Kwun Tong Court heard yesterday. The 23-year-old assistant is a witness in the trial of five people who deny charges of conspiracy to defraud and bribery in relation to the sale of baby milk formula. Accused are Cheung Shiu-chor, 51, and Wu Xiankuai, 40, both parallel- goods traders, and Wu Ka-keung, 42, Lam Kwok-fai, 36, and Anson Ng Ching-kin, 32 - all managers at ParknShop. The witness told Magistrate Anthony Yuen Wai-ming he had seen Cheung and Wu moving dozens of boxes of baby formula milk from the storeroom to their vehicles on numerous occasions from January to May last year. Cross-examined by Cheung's lawyer, Victor Lee, the witness said he was one of three people working in the storeroom and would 'almost always' be asked to help move the heavy boxes - each with 12 cans inside - to the traders' vehicles. The witness, who was not responsible for keeping an inventory of the baby milk formula, said he made conversation with the traders and 'learned that they were selling the milk formula on the mainland'. He said he believed they had already paid for the goods. A sixth defendant, a Watson's supervisor, Lau Koon-hung, 40, has pleaded guilty to accepting an advantage. The six face a total of 12 counts - four each of conspiracy to defraud, offering an advantage to an agent and accepting an advantage. The Independent Commission Against Corruption, which arrested them in May last year, accused the six of conspiring to collect milk formula for sale across the border. The trial continues today.