1. PU foamed earplug with CE352-2 certification 2. SNR: 32db 3. ... ,Payment term: T/T 30% deposit first before producing3,Material: PU Foam earplug4,Prodution time: we can produce up to 100,000 ... ,Suitable use: all kind of noisy environment7,Cord: all the earplugs can come with cord or without cord 8,Packing: opp ... ,Carton: paper carton,can also print logo on the surface. special PU Foam Earplugs