Mainland border agents have destroyed 1,500 boxes of Chinese biscuits bound for Hong Kong and Singapore after they tested positive for melamine.
The tainted products resurfaced as more suspects in the milk scandal went on trial in the mainland, where melamine has killed at least six babies and sickened tens of thousands.
The Silang House of Steamed Potato Crackers, manufactured by Dong Guan Kam Tai Company, were made of melamine-tainted Mengniu milk powder, according to reports.
A spokesman for the Centre for Food Safety said the importer halted the whole product line of Silang crackers to Hong Kong after the melamine test results for the Wasabi crackers were released.
The Southern Metropolis Daily said yesterday the Dongguan inspection and quarantine bureau had checked 62,400 of the crackers.
They found two batches of 1,500 boxes each exceeded the melamine safety standard.
Hong Kong's maximum standard for melamine in food is 2.5 parts per million and in infant products 1ppm.
The bureau announced on Monday that the failed products had been destroyed and the others were sent back to the manufacturer.
In September, the center examined three flavors and found that the Wasabi cracker (238 grams) contained 18ppm of melamine, exceeding the safety standard of 2.5ppm.
The potato and tomato crackers passed tests for the chemical which is used in making plastic.
Earlier, JinTai Investment Trade Company, the Hong Kong office of the company, said 2,000 boxes of tainted Wasabi crackers had been destroyed.