Hai Tin Co., Ltdspecializes in manufacturing and trading Industrial Gases:♦ O2 Gas, liquid O2 (99.3 - 99.6% content)♦ N2 Gas, liquid N2 (99.998 - 99.999% content)♦ Air and liquid Ar (99.998 - 99.999% content)♦ Carbon Dioxide Gas (99.998 - 99.999% content)♦ Helium Gas (99.999% content)♦ C2H2 Gas (content 98%)☞ Products are qualified for national standards TCVN 4245-1996