The development history of 4.0mm columnar activated carbon: Coal based columnar activated carbon is a very excellent adsorbent. It is made by using charcoal, various fruit shells, and high-quality coal as raw materials, and processing and manufacturing them through a series of processes such as crushing, sieving, catalyst activation, rinsing, drying, and screening using physical and chemical methods. The fame of coal based columnar activated carbon dates back to World War I.

In 1915, during World War I, the German army used a terrifying new weapon -180000 kilograms of chlorine gas - against the Anglo French coalition. Five thousand British and French soldiers died on the spot, and 15000 were injured. If there is a spear, a shield will inevitably be invented, and if there is chemical poison gas, a gas defense weapon will inevitably be invented. Two weeks later, military scientists invented a weapon to protect against chlorine gas poisoning. They distributed a special mask to every soldier on the front line, which contained cotton soaked in a solution of sodium thiosulfate and sodium carbonate. Both of these drugs have chlorine removal function and can provide protection. But if the enemy uses the second type of poison gas, this mask will be powerless. The fact is that in less than a year, both sides have used dozens of different chemical toxic gases, including the well-known meson gas and hydrogen cyanide compounds. So, it is necessary to find a substance that can make any toxic gas lose its toxicity. This antidote for the Hundred Spirits was discovered by scientists at the end of 1915. It is 4.0mm columnar activated carbon.

In 1917, both sides of the war had installed activated carbon in their gas masks, greatly reducing the harm of toxic gas to the soldiers. During World War II, Germany first used mustard gas to trigger a gas war, and people began to seek ways to avoid being affected by the gas. Coal based columnar activated carbon was widely used in wars because it could effectively prevent gas attacks. With the advent of the global Cold War, activated carbon has once again entered the lives of ordinary people from war, and it has always been a major contributor to sewage treatment plants, hospitals, and other places.

In 2002, black diamond gold black carbon block seamless activated carbon was born, which filled the gap in the world of activated carbon molding. It took a big step forward in the application of activated carbon. Black diamond gold black carbon is refined using world leading molding technology, retaining high adsorption value while making it into decorative crafts, showcasing its classical temperament and introverted charm to the fullest. At the same time, it also makes black diamond gold black carbon have broad application space in homes, cars, offices, hotels, entertainment venues and other places.

In the 2003 SARS epidemic, activated carbon became the preferred choice for medical staff and even ordinary city civil defense due to its excellent efficacy (activated carbon masks). However, 4.0mm columnar activated carbon has always been in powder or granular form, which is restricted from being widely used due to factors such as difficulty in storage, short aging time, and easy pollution. The molding technology of activated carbon has always been a major challenge in the world, and as China, which has always been a leader in the field of activated carbon, we are once again at the forefront.