The agency said it was now testing all wheat gluten from China.
The other is aimed at promoting the use of wheat gluten, a grain byproduct.
Generally, this dish is served with wheat gluten in a soup setting.
Tainted wheat gluten began coming into this country in November.
Officials said they were still tracing the distribution of the tainted wheat gluten to all the companies that had received it.
Simulated duck is a common use for wheat gluten.
Most experts on wheat gluten in the region said they had never heard of mixing it and melamine.
It is made of wheat gluten, oil, sugar, soy sauce, and salt.
Imports of milling industry products like wheat gluten, while still small, have more than doubled in value since 1996.
The taxes apply to white wine, rapeseed oil and wheat gluten.