Company description
As early as 4000 BC, ancient civilizations began to realize the importance of drinking and using clean water. They also realized that the fires they used for cooking and heating left the air so dense, intolerable and polluted. In essence, they began using their senses of sight, smell, and taste to analyze the water and air, and try to develop viable filtering and treatment systems. For example, they began to boil water and filter water by using sand and gravel. These processes are still used today.
