Moldex is a professional manufacturer of industrial hearing and respiratory protection products, and its dust masks and soundproof earplugs are characterized by safety, comfort and efficiency, and have a good reputation in the industry. In 2008, Moldex was the first manufacturer in the industry to remove the much-maligned PVC from all products and packaging, becoming the first manufacturer in the industry to be 100% PVC-free.
 
Moldex Soundproof Earplugs are available in two types: disposable foam and reusable silicone. The foam sound-isolating earbuds are made of lightweight, soft foam, with a smooth surface that is less likely to irritate the ear canal, and are extremely comfortable. Moldex sound-isolating earplugs are mainly aimed at industrial noise prevention, and most of them are disposable foam styles, and the effect of repeated use is obviously worse, and they are mostly sold in large packages of more than 200 pairs per can, but their comfortable use is also suitable for daily study and sleeping.
 
Almost all Moldex foam earbuds offer the highest noise reduction rating of NRR 33dB, which is the best foam sound isolation earbuds on the market. Represented by the classic Pura-Fit earbuds, each pair is sold at a price of less than 1 yuan when sold in large specifications, but there is no independent packaging inside, which is inconvenient to carry. The foam material is loose and lightweight, although the comfort is high, but there will be cavities on the surface of individual earbuds, and the quality control needs to be strengthened.
 
The SparkPlugs are smaller and softer than the Pura-Fit series and are available in both cordless and corded options for use while sleeping, with a cable to prevent slippage and easier storage. However, the price is much more expensive than that of the Pura-Fit, with wireless and wired models costing 4 yuan and 6 yuan per pair respectively.
 
Rockets is a reusable silicone sound-isolating earbud with a three-layer Christmas tree-shaped design, a small bubble at the tip of the earbud to provide cushioning for the ears and avoid irritation when wearing, and the noise reduction level can reach NRR27dB. There are also cordless and corded options, and pocket bags are also available for easy storage. The price is about 11 yuan per pair, which is the cheapest product among common brands of silicone earbuds.