【第 1 段建议】: 1. "lmpact" should be corrected to "Impact" (capital 'I'). 2. "efficie" should be corrected to "efficiency". --- 【第 2 段建议】: 1. "ncy"应为"Efficiency"。 2. “of the”重复出现，应删除其中一个。 3. “...which not only reduces the production of sand making, but also accelerates the wear of wearing parts. .” 中的句末多了一个句号，应删去。 4. “...to affect production schedule and output.” 中的“schedule”应为“schedules”，因为前面有“production”作为修饰词，需用复数。 5. “...which is only installed on a stable and stable foundation.” 中的“stable”重复，应保留一个。 6. “the layout of the layout and reasonable layout can achieve maximum productivity.” 中的“the layout of the layout”表述不清，应重新措辞以避免重复。 7. “…without delaying the high-speed operation of sand and gravel crushing production. ” 中的 " " 应删去。 --- 【第 3 段建议】: 发现的问题: 1. "WhatsApp:+86 13761974616" 应为 "WhatsApp: +86 13761974616"（添加空格）。 2. "Demand(multiple):" 应为 "Demand (multiple):"（添加空格）。 3. "Materials (brochures, catalogs）" 中的右括号应为 "Materials (brochures, catalogs)"（替换右括号为英文右括号）。