China’s Ministry of Commerce has announced duties of 5% to 25% on $60 billion of U.S. exports following America’s plan to apply 25% tariffs to $200 billion of Chinese exports. The duties to be applied by China are wide-ranging and cover 56% of all product categories (HS-8) including 85% of all electrical machinery and 75% of all electronics tariff codes by number. That’s one sign China cannot react symmetrically to U.S. duties. The largest items covered with 25% duties focus on commodities where it should prove simple to swap in other countries’ products. They include wood ($1.83 billio...