1. Marking Width: The internationally recognized standard width for road markings is 15 centimeters. Considering that the marking machine can be used in parking lots, residential areas, etc., it's advisable to purchase a machine with adjustable width functionality. This will aid in efficient land use and save paint. Typically, the adjustable range is 5-15 centimeters.

2. Type of Paint: The commonly used paints are solvent-based and water-soluble. If the marking machine is versatile (compatible with both types), it can expand your business scope to sports fields, lawns, etc.

3. Handheld Spray Gun: A handheld spray gun not only allows you to freely use templates to draw various symbols but also works in places other than walls, pillars, and floors. Handheld spray guns have gradually become standard equipment for various marking machines.

4. Cleaning System: Some high-speed guardrail pile drivers are equipped with an automatic cleaning system that can quickly clean the pipeline system after each job, saving more than half of the cleaning time.

5. Glass Bead System: Road maintenance companies should also consider equipping their machines with a glass bead application system as a standard feature. This system can spray glass beads, making the markings fully compliant with national requirements.

6. Bending Operation: Some high-speed guardrail pile drivers are also equipped with an additional wheel at the back, allowing you to work freely along curved markings. Companies engaged in sports fields and multi-curve operations should consider purchasing machines with this feature.