CHICAGO (Reuters) - China approved five genetically modified crops for import on Tuesday, the first in about 18 months, as representatives from the Asian country and the United States met in face-to-face talks to try to resolve trade disagreements.

Five other products, whose makers are known to be seeking approval of, were not given the green light by China’s agriculture ministry, however.

Some that were approved, including two canola varieties, had been waiting for six years. Others, like DowDuPont Inc’s (DWDP.N) Enlist E3 soybeans, are more recent and were developed to challenge the historic dominance of Monsanto Co, now owned by Germany’s Bayer (BAYGn.DE), of the $40 billion U.S. soybean market.

U.S. farmers will not plant soybean seeds in large quantities unless they are approved by China, which until the trade war imported 60 percent of U.S. soybeans.

Below are the seed traits approved, their trade names and the companies that make them.