【第 1 段建议】: 1. "lmpact" 应为 "Impact"。 2. "EPCO" 应为 "EPC"（假设为常见缩写）。 3. “中文” 后应加上冒号，以清楚表明选择语言的内容。 其余部分无错误。 --- 【第 2 段建议】: 1. "1Stone" 应为 "1 Stone"。 2. "27 Types of Stone Crusher and How to Choose the Best?" 中的问号应改为句号，以保持一致性。 3. "Jaw Crusher Basics in 3 Minutes" 应改为 "Jaw Crusher Basics in Three Minutes"。 4. "Equipments" 应改为 "Equipment"。 5. "Cost Analysis of Mobile Crushing Plant vs. Fixed Crushing Station" 中的 "vs." 应改为 "versus" 以保持正式性。 6. "both of them have great effect on vertical roller mill final end products size" 中的 "effect" 应改为 "effects" 以对应复数主语。 7. "good grain shape" 建议改为 "good grain shapes"。 8. "which greatly improves the production efficiency" 中的 "improves" 可考虑改为 "improve" 以保持与 "shape" 的一致性（同时也需要调整为 "shapes"）。 9. "Crushing is crucial stage in gold benefication process" 应改为 "Crushing is a crucial stage in the gold benefication process"。 10. "Crushing And Grinding Pr" 有一个未完的单词，可能是 "Process"。 --- 【第 3 段建议】: 1. "plays" should be "play" in "mineral resources still plays irreplaceable role". 2. "beings" should be "beings." in "existence and development of human being." 3. "was instead by" should be "was replaced by" in "In the domestic high manganese steel was instead by alloy steel plate gradually." 4. "the material to make ball mill liner" should be "the material used to make ball mill liners" in "it becomes the mainstream in the market for the material to make ball mill liner." 5. "crusher equipment" should be "crushing equipment" in "one of the most familiar crusher equipment." 6. "often symbiotic with other mineral el" should be "often symbiotic with other minerals." in "often symbiotic with other mineral el." 7. "tonnes" should be "tons." in "one or two tonnes per day." 8. "and functi" should be "and functions." in "This machine has many types and functi." --- 【第 4 段建议】: 1. "cr" in the line "and cr" is incomplete and needs clarification or completion. 2. "material" should be "materials" in "transporting material over long distances" for consistency, as it refers to multiple types of material. 3. "good choice" should be "a good choice" in "Stone crusher is good choice" for grammatical correctness. 4. "each equipment" should be "each piece of equipment" in "good coordination of each equipment" for proper phrasing. 5. In "Materials (brochures, catalogs）", the closing parenthesis should be a standard parenthesis instead of a special character: "Materials (brochures, catalogs)".