factory industrial use noise reduction soundproof sleeping waterproof and noise-proof 1270 silicone wired earplugs wholesale 工厂工业用降噪隔音可睡眠可防水防噪音的1270硅胶有线耳塞批发

wired earbuds (individually packaged) fluorescent yellow, upgraded version (individually packaged) sky blue, upgraded version (individually packaged) girl pink upgraded version (individually packaged) earphone with line (including earplug box) wired earbuds (not individually packaged) naked-pack earplugs (individual eartips) foam earphone with line (individually packaged) nipple-style earphone without line (individually packaged) foam earplugs with cord (individually packaged) earplug box

see the figure.