Which type of earplugs contain silicon rubber and a fixing agent?
A. Semi insert protectors
B. Custom moulded earplugs
C. Pre-fabricated earplugs
D. Canal caps
Answer:B
Which type of earplugs contain silicon rubber and a fixing agent?
A. Semi insert protectors B. Custom moulded earplugs C. Pre-fabricated earplugs D. Canal caps