求翻译：我公司加工核桃皮系列产品有20余年的历史，年产量2000余吨，其中核桃壳磨料规格多样，适合不同行业的需求！是什么意思？

Processing Walnut leather products in our company has a history of more than 20 years, annual output of more than 2000 tons, with walnut shell abrasive specifications varied for different needs of the industry!