【第 2 段建议】: 1. "Equipment: HPT500 multi-cylinder hydraulic cone crusher (1 unit), HPT300 multi-cylinder hydraulic cone crusher (two units)" - 应将 "two units" 改为 "2 units" 以保持数字格式一致性。 2. "equipment's quality was very excellent and trustworthy.Person In Charge of Group Project" - "trustworthy.Person" 应该在 "trustworthy" 后加一个空格，改为 "trustworthy. Person In Charge of Group Project"。