U.S. Commerce Secretary Wilbur Ross is preparing for a trip to China to continue trade negotiations. The Financial Review is reporting the U.S. will seek long-term, enforceable product-by-product contracts with China. Those import contracts would make it less likely that purchases can be canceled. Ross is expected to focus on U.S. products like crude oil, soybeans, beef and poultry. The U.S. also wants China to lift quotas and regulatory barriers which could double agricultural exports to China.