In fact, it is very simple. Take a metal product and do experiments at 20W and 30W laser marker respectively, and you can tell the difference directly by looking at the effect.

Differences Between 20w and 30w Laser Marking Machines
With the same marking depth, 30W fiber laser marking machine saves time more than 20W. At the same marking time, 30W fiber laser marking machine marks deeper than 20W. When the depth is not required and the marking content is clearly visible, a 30W laser marker can improve work efficiency.
The high-power laser marking machine controls the effect of marking depth is better. For example, if the marking depth limit of 20w is 1 mm, then the depth of 30w laser marking machine can reach 1.5 mm.
Generally speaking, the higher the power of the fiber laser marking machine, the higher the price. In terms of energy saving and cost, low power can be used as much as possible on the premise of satisfying efficiency.

Which One to Choose?20W or 30W?
Although the marking speed of a 30W laser marking machine is faster than 20W, it is not necessary to choose the 30W. 20W laser marker has met the needs of many factories, depending on the situation. In addition to ultra-precision processing, the 20W laser marking machine has also been recognized by most processing manufacturers in terms of application and efficiency.

1. Actual
Clarify the equipment processing requirements. You must first clarify your actual processing requirements, and then choose a laser marking machine with appropriate power.
This step is crucial.
If you don’t even know the actual needs of your own processing, how to choose the right laser marking machine?
Due to the different powers of various laser marking machines, the types of lasers are different, and the scope of applicable materials is also different. Improving equipment utilization can properly meet your own needs.
Therefore, we need to fully consider which type of laser marking machine should be used to mark our own products and select a laser marking machine according to the actual situation.
2. Clarify the price
Price is the topic of more concern.
When you choose a laser marking machine, don’t get into the misunderstand of the cheap price. It is recommended that everyone, on the premise of ensuring quality, authenticate, compare, and refer to each other to ensure that we can buy products that meet our needs and are relatively reasonably priced.
20W and 30W need to be selected according to the marking materials. The higher the power, the higher the price.
3. Quality Assurance
Good-quality laser marking machines have good stability and generally have fault diagnosis and interlock functions.
In addition, it is also necessary to pay attention to whether the laser marking machine manufacturer provides maintenance services. Once the equipment fails in the later stage, the manufacturer should ensure that relevant after-sales maintenance services are provided in time to ensure that the normal processing and operation of the enterprise will not be affected.

Therefore, when we choose a laser marking machine, we can select the appropriate power according to the actual product marking situation. If there is no high requirement for the processing efficiency of the workpiece, a 20w laser marking machine can be selected. Those with higher requirements on the workpiece can choose a 30w laser marker or even a more efficient machine.