picogram

Picogram makes water-purification filters and filter assemblies, the core components that remove contaminants from drinking water, as well as finished hot-and-cold water purifiers and shower filters for bathing use.

Its products reach household consumers and are also exported to markets including Japan, the United States, and Thailand. Listed on KOSDAQ, Korea's tech and small-cap board, the company's key proprietary capability is a one-touch connection mechanism for filters, including the structurally complex reverse-osmosis membrane type, which it also applies to carbon-block filtration materials it supplies as a standalone material.