A US soybean trade group is pushing for higher levies on Chinese used cooking oil that it says is undercutting American crops used for biofuels.

A group that represents the biggest US soybean processors, including Cargill Inc., Bunge Global SA and Archer-Daniels-Midland Co., wants the levies to be higher than the current 15.5% rate, according to a notice the National Oilseed Processors Association, or NOPA, sent to its members over the weekend that was seen by Bloomberg.

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