1. Intake disorders: Respiratory diseases such as asthma are typical cases of hypoxia caused by intake disorders, which will seriously affect life, study and work when they occur. In addition, oxygen-deficient environments such as basements with no ventilation and indoor spaces without ventilation i

1. The advantage of Ar+He argon is that the arc combustion is very stable and the spatter is extremely small. The advantages of helium are high arc temperature, high heat input to the base metal, and fast welding speed. The advantages of both can be obtained by adding a certain amount of helium with

Electronic special gas is a key material in the electronic industryElectronic special gas (referred to as electronic special gas) is an important branch of special gas, and it is an indispensable raw material for the production of electronic industries such as ultra-large-scale integrated circuits (

The Infectious Disease Hospital in Liliendaal, Guyana will soon see delivery of an oxygen generating plant, giving it an independent source of oxygen and helping to reducing costly oxygen purchases.To be donated by the Hindu Swayamsevak Sangh (HSS) and Sewa Guyana, the plant’s arrival and subsequent