Longtech machinery Industry Co., Ltd. is a professional manufacturer of Roots Blower and Vacuum Pump facility. For many years, Longtech has been reputable and popular in the market based on our excellent quality and satisfactory perfect after-service. Also we persist in aggressively adhering to the policy of "Competitive Price", "Efficiency", "Sturdiness", "Innovation", "Durability", "Easy maintenance". In the past years, with the upgrading of domestic industrial standards, and in view of the necessary to enhance market competition, we have passed ISO 9001 and CE certification.