Manufacturer seeds Syngenta AG said Monday that China has officially allowed the import of genetically modified maize, which is located in the center of several lawsuits relating to the supply of American corn. Thus, uncertainty, and validation, which lasted for five years, ended.

China, the world's largest importer of soybeans and fastest growing market for corn, also allowed the import of GM varieties of soybean DuPont Pioneer, confirming the last of the three expected permissions GM grain of different companies.

Amid the growing concern of consumers about the safety of GM products in China and fears of government officials about excessive dependence on the U.S. food supply Beijing took more time than in the past to authorize new GM crops. The delay has raised questions about future investment companies producing seeds in studies of GM seeds, which can take about 10 years and $150 million

Viptera corn Syngenta became the object of investigation since the end of last year, when China began to cancel shipments of corn from the United States after the discovery in the supply of prohibited varieties, known as MIR 162. This variety allowed for production in the U.S. in 2010, but was banned in China.

The refusal of supplies, which later spread to dry distillery grains (DDG), brought down world prices and forced grain traders Cargill Inc. and Archer Daniels Midland Co and dozens of farmers to sue Syngenta for MIR 162, demanding compensation for the hundreds of millions of dollars in damages.

According to Syngenta, the resolution of China's corn imports MIR 162, designed to combat pests, apply to corn and DDG for use in food and feed.

A few large importers in China have expressed dissatisfaction over the lack of transparency in the issuance of Beijing's permission, which probably gave the state COFCO unfair trade advantage. The government decision also re-sparked the debate over the safety of GM products.

The resolution of China received soybean variety, which produces the product Plenish soybean oil with high oleic acid content - Pioneer developed for weed control.

Bayer CropScience on Friday received permission from China to import your varieties of GM soy seven years after the filing of the request.