1,Material: silicone 2,OEM and ODM are warmly welcomed 3,MOQ:10000pcs 4,Shipment: as customize 2, Color: Up to client3, Cord: with cord or without cord choose4, Daily output: 100,000 pairs per day5, Certification: CE Certification6, Operating environment: all kind of noisy environment7, Package: opp bag\paper bag\plastic box\blister8, Logo printing: any logo can be printed on the surface of ...