300mw Blue Violet Engraving Cutting 405nm Adjustable Focal Length of Laser Head

The power is too large,Can't work for a long time,Preferably below 30 minutes
The spot mode: point
The output wave: visible light
Product material: aviation aluminum
The optical part: focusing lens
Lens material: PVC focusing mirror
Working temperature: -40-75 degrees Celsius
Working medium: Semiconductor
Work life: 8000 hours (with greater heat
dissipation device) Dimension: diameter 33*55MM
DC length: 1.2M
Structure characteristics: aluminum alloy shell +
imports of laser diode + constant current
drive plate
USE：
Carving materials: wood, bamboo, plastic
(part), certain cortical, paper, all kinds of bank
cards, discount cards (non-metallic),
rubber stamp.
Not Carving material: gold and silver copper,
iron, aluminum, steel (where metal
regardless of the thickness), shellfish,
ceramic, stone, reflective material,
transparent material, part of the white
material.