I need some input regarding price to laser mark. The material is white polypropylene (non PVC) based part, dimensions 1/8" Thick x 5" Wide x 1.5" tall.

My test results on samples provided by customer; CO2 yields poor results with little to no contrast at all. Fiber however yields a decent dark grey contrast with the white background.

Material: White Polypropylene
Area to mark: 1" tall x 4" wide
Time to mark: 15 seconds
Quantity to be marked: 1000
Feed: Manual

Thanks - John