One of noise source is factory equipment. To deal with the noise, factory usually customised acoustic panels to separate equipment noise.
Panel with holes can absorb noise well, can decrease 50-60 decibel, have a very good effect.
The length, width, thickness can be customised.
Easily installation and environmental, poisonless and harmless.
Can be teardown to repeat to use.
Galvanized steel , one side punched panel, the hole diameter is 2.5mm, the rate of hole is 20%.
keels are all around, high strength.
