We produce, purify or mix many specialty gases such as CF4, NO, Xe, N2O,SIF4 HE BF3, ... CO, C3H6, SF6, CH4 ,CL2 South China Specialty Gas is a leading specialty gas companies in China. There are nearly900 employees ... products at competitive price. We produce, purify or mix many specialty gases such as CF4, NO, Xe, N2O,SIF4 HE BF3 ...