1. "lmpact" should be corrected to "Impact". (The letter "l" is incorrectly used instead of "I".) 2. "semi-mobile" should be consistently spelled with a hyphen as "semi-mobile" instead of "Semi-mobile". 3. The use of "Life-cycle Service" should be "Lifecycle Service" for consistency. 4. In the phrase "high-efficiency external mounted electric drum", "external mounted" should be "externally mounted" for correct usage. 5. "the production process, reduces the installation and disassembly difficulties" - consider changing "difficulties" to "difficulty" for proper pluralization. 6. "holdback" might be more commonly referred to as "holdback device" in industry contexts for clarity. 7. The phrase "SMP Modular Mode Standardiz" appears to be truncated or incomplete and should be reviewed for proper completion or correction. Please ensure to review the context in which these phrases are used to ensure any suggested corrections maintain the intended meaning.