【第 1 段建议】: 1. "Vertical Shaft lmpact Crusher"中的"l"应为"I"。 2. "EPCO"应为"EPC"。 --- 【第 2 段建议】: 1. "to Improve"应为 "To improve"（首字母大写）。 2. "Summary："应为 "Summary:"（去掉空格）。 3. "C130 has a working capacity"应为 "C130, which has a working capacity"（添加逗号以连接定语从句）。 4. "4000 Dollar"应为 "4000 dollars"（小写并复数形式）。 5. "by changing the feeder speed and using the installation in the The hydraulic hammer"应为 "by changing the feeder speed and using the hydraulic hammer installation"（去掉多余的 "The" 字）。 6. "more than 20% of production capacity, otherwise it will be a loss."应为 "more than 20% of production capacity; otherwise, it will be a loss."（更正标点为分号，以及在"otherwise"后添加逗号）。 --- 【第 3 段建议】: 1. "up to October 2023" - Consider changing "up to" to "until" for clarity. 2. "the jaw of the jaw crusher" - Consider rephrasing for improved readability, e.g., "the jaw of a jaw crusher." 3. "resulting in production losses" - Could specify "production loss" to maintain singular form. 4. "to find the best time for jaw rotation or replacement from a cost and benefit point of view" - "cost and benefit" should be "cost-benefit" for correct phrasing. 5. "7 Types of Stone Crusher and How to Choose the Best?" - Remove the question mark at the end if it is a title. 6. "5 Things You Need to Know about Concrete Crusher" - "Concrete Crusher" should be plural, "Concrete Crushers." 7. "Demand(multiple):" - Add a space after "Demand" for consistency: "Demand (multiple):" 8. "Materials (brochures, catalogs）" - Change the closing parenthesis to a standard parentheses: "Materials (brochures, catalogs)." 9. "We will contact you as soon as possible." - Consider breaking into two sentences for clarity: "We will contact you. as soon as possible." 10. "Stone Crusher In Ethiopia" - "In" should be lowercase: "Stone Crusher in Ethiopia." 11. "Jaw Crusher" - The list format should be consistent, ensure capitalization alignment throughout. 12. "Sales H" - This seems incomplete and needs clarification or completion.