Bauxite is a kind of earthy mineral containing aluminum element. In order to make full use of the value of bauxite in production, it needs to be calcined.
R410a refrigerant gas R410A is a HFC blend, used mainly in air conditioning systems; it may also be used as an alternative to R13B1 in low temperature refrigeration Detail Refrigerant Type : R410a Chemical Name : , Difluoromethane /Pentafluoroethane Chemi