HANGZHOU SNNA CHEM TECH CO., LTD. is located in the world
cryogenics capital city Hangzhou/ China, where the capacity of
cryogenic interrelated industry is near to half of that of the
world. As a major technology and product supplier, SNNA CHEM has
committed herself to renovation and improvement of cryogenic
technologies with the efforts of company's main force - a technical
team with related experience of 10 to 30 years.