香港大學經濟及工商管理學院講師阮穎嫻博士說：「自由市場做生意，該讓他們自行選擇，不該有限額。」
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The technological methods to detect industrial dyes in spices aren't the issue, according to Elahi. These are robust enough to detect the synthetic dyes at low levels.
"People didn't always carry the donor card on them in their pockets and handbags and the nurses and doctors didn't have time to look through. So there was a problem," Cox said.