VACTech China, who is the leading gas discharge tubes supplier in Asia. Production of VACTech gas discharge tubes based on ITU K12, EN61643-11 standard. Our products including 2 pole and 3 pole arresters, impulse current handle capability from 5KA to 100KA. Advantages: 1.We can provide gas discharge tubes with high quality at the competitive prices. ***** facility (ISO9001 Certificated) based in Shenzhen China, capacity up to 30Million Pcs per year. 3.We offer long term guarentee to customer and the return rate of our products below 100PPM.