Talk to your doctor about any change in the color or size of a mole or if itching, pain, bleeding or inflammation develops. Moles are a common type of skin growth. They often appear as small, dark brown spots and are caused by clusters of pigmented cells.
Halon is a fire suppressant agent found in both Fire Suppression Systems (Halon 1301) and Fire Extinguishers (Halon 1211). This is the most effective extinguishing agent available.Halon is a clean agent, which means it leaves no residue when used, so causes no damage to your property.return to top.alon is a fire suppressant agent found in both Fire Suppression Systems (Halon 1301) and Fire Extinguishers (Halon 1211). This is the most effective extinguishing agent available. Halon is a clean agent, which means it leaves no residue when used, so causes no damage to your property. return to top.
Xenon is a chemical element with symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas, that occurs in the Earth's atmosphere in trace amounts.he first excimer laser design used a xenon dimer molecule (Xe 2) as its lasing medium, and the earliest laser designs used xenon flash lamps as pumps. Xenon is also being used to search for hypothetical weakly interacting massive particles and as the propellant for ion thrusters in spacecraft.