Jinan Guantong is a professional company engaged in refrigerant gas and PTFE product. Our factory is the biggest refrigerant gas company in north China. The main products include R22, R32, R125, R134a, R134a replacements, R141b, R142b, R152, R401a, R404a, R406a, R407c, R410a, R415a/b, R417a, R418a R422a, R425a, R507 and R600a and PTFE Power, Rod, Sheet, Film, etc. Most of our products have international approvals, such as CE, KGS and DOT. Our good quality and perfect services help us earn ...