1.All parts of the cutting torch are made of pure copper so it's difficult to bend during usage and so will not change color after long-term usage;
2. The types and measurements of the torches are different with traditionals, so that it's easy to become a currency and better sales for dealers;
3. All the valve poles are matched themselves tightly for reducing abrasion on valve needles, this can guarantee the longevity of the products, as well as they work smoothly;
4. The welding position will not be moved for using high-frequency ultrasonic to weld;
5. The product is packed separately by small foam box, that makes more exquisite and beautiful;
6.By machinery industry JB/T6970-93.