... Certification 2, Rebound time: 5- 25 seconds 3. SNR: 32db 4, Color: any two colors 1, Description: double color earplug2, Material ... : 10000 pairs4, Color: Up to client5, Cord:all the earplugs can come with cord or without cord 6, Daily output: 100,000 pairs ... , Price term: FOB Guangzhou, L/C at sight earplugs with cord