【第 2 段建议】: 1. "multi cylinder" 应为 "multi-cylinder"（统一使用连字符）。 2. "three cavity" 应为 "three-cavity"（统一使用连字符）。 3. "jaw crusher for coarse crushing" 后缺少句号。 4. "Hydraulic Cone Crusher" 中 "Hydraulic" 应为小写，保持与其余部分一致。 --- 【第 3 段建议】: 1. "HPT300 multi-cylinder hydraulic cone crusher runs at a high speed and adopts lamination crushing principle" 应为 "the lamination crushing principle"。 2. "Thus, labor force is saved and meanwhile maintenance time is shortened." 应为 "Thus, the labor force is saved and meanwhile the maintenance time is shortened."。 3. "Impact crusher has three cavities while the traditional impact crusher only has two." 应为 "The impact crusher has three cavities while the traditional impact crusher only has two."。 4. 在"<br />"标签位置的“Details”之后缺少句点。 5. 在"Company Profile"、"Social Responsibility"、"Development History"、"Production Base"等小标题后面缺少句点。