LELANTUS, a brand under East Link Construction and Technology Company, is a total indoor air quality solutions provider who specializes in consulting, marketing, and sales & distribution of innovative indoor air quality (IAQ) systems that effectively removes common indoor pollutants such as PM2.5, CO2, and TVOC in enclosed spaces with the world's first smart central air purifying system. Its service offerings include evaluation, design customization, installation, real-time monitoring, smart control, and maintenance of indoor air quality systems to commercial clients.