New Zealand food safety officials are to test Chinese milk sweets on sale here but banned overseas after being found to be tainted with melamine.Forcing manufacturers and importers to label their product with where it was made would give consumers that much more information on which to base their decisions. And in cases like this, where China is shipping contaminated food to the world, its a vital proxy. The only people who have anything to gain from secrecy are those who want to sell unsafe products. And that's not something we should let them get away with.Tests in Singapore found that White Rabbit Creamy Candy was contaminated with the chemical.