NZ ToFuMan 2010 Co Ltd uses 100% GMO free soybean imported from Canada.

Genetically modified foods (GM foods, or biotech foods) are foods produced from genetically modified organisms (GMOs), specifically, genetically modified crops. GMOs have had specific changes introduced into their DNA by genetic engineering techniques. These techniques are much more precise than mutagenesis (mutation breeding) where an organism is exposed to radiation or chemicals to create a non-specific but stable change.
Genetically modified organisms (GMOs) in food are concern for consumers who are worried about the impact that these organisms may have on their health. As a result, many companies in the late 1990s began to apply the “GMO free” label, indicating that their food does not contain genetically modified organisms. A number of nations legislate labeling, and in Europe, food must be labelled to indicate whether or not it contains GMOs. In the United States, however, labelling is purely voluntary and not regulated by any governmental body or organization.
Since it is not regulated, there has been some question about the validity of the GMO free label in the US. A number of organizations have pressured the Food and Drug Administration (FDA), as well as the United States Department of Agriculture (USDA), to enact legislation governing food labelling in regards to these ingredients. Many food activists want a label that is standardized, so that consumers who are concerned about this issue can be assured about the content of products they purchase.
Most US consumers have foods containing GMOs in their home. The majority of corn and soybeans grown in the US have been modified, as have several other crops. Some research indicates that many processed foods contain such ingredients, so for consumers who are concerned about this issue, labeling would be helpful.