Mr. Lai, the founder of Fluxtek, noticed that low quality carbon was being used in the filters. So, he decided to cancel the supply of all filters. He even went to coconut producing countries like Indonesia, India and Sri Lanka to produce high quality carbon. Mr. Lai confirmed the quality of each filter, including carbon. Due to this, Flaxtek brand has been able to gain the trust of customers in Bangladesh. CFK4 is the second basic model of this brand. Origin of this brand is Taiwan. It’s an open model of RO water purifier which is quickly changeable. It is a 50GPD water purifier which will provide you maximum 192 liters pure water per day. It has a 5G pressure tank (19 liters) which will reserve pure water. It has a big American type durable faucet. You can hang it in your wall or you also can set it under your kitchen sink.