... ×2200×2300mm, 2800kgOptional systemGuide warning screen, pre-marking system, trailer, swing type, screeding type, and two ... ×2200×2300mm, 2800kgOptional systemGuide warning screen, pre-marking system, trailer, swing type, screeding type, and two ... after construction work.13. Pre-marking system: Pre-marking working synchronous with the marking operation, greatly improving theconstruction efficiency ...