1. Q: Are you manufacturer or trading company? A: We are professional manufacturer, willing provide you with best solutions for air separation products. Our Small Liquid Nitrogen Generator is with big price advantage over all competitors in China.2. Q: What to known for detailed inquiry of this system? A: Need to know the Liquid Nitrogen Purity demands. Need to know the Liquid Nitrogen Production, how many Liter per day or per hour. Need to know the Application , working condition, with how big Dewar tank.3. Q: Have your engineers participated in any foreign projects? A:Yes, Our engineers have abundant oversea experience, could supply best after-sales service for oversea customer. We support online video talk to guide the installation and operation.