China has approved the import of biotech corn manufactured by Syngenta AG that sparked a flurry of recent lawsuits by Minnetonka -based Cargill Inc. and farmers across the country. China refused to accept shipments of the corn from Cargill in late 2013, prompting shippers, farmers and others in the corn industry to sue Syngenta for losses caused by promoting and selling the corn in the marketplace too early - before China, a major importer, had approved it.