科乐收农业机械贸易（北京）有限责任公司 – 主页 CLAAS of America, Agricultural Equipment, Tractors, Combines, Harvesters CLAAS is a global manufacturer of agricultural equipment including forage harvesters, combines, balers and tractors. Founded more than a century ago in Germany, the family-owned business has grown to become the fourth largest producer of ag machinery in the world. Find your next CLAAS ag equipment here.