久久国产精品免费专区,国产一区亚洲二区三区,亚洲国产精品一区二区三区,亚洲精品福利,最新99国产成人精品视频免费,一区二区亚洲视频,国产呦精品一区二区三区网站

1. The better choice for pure biological porcelain is German technology, continuous casting process, and European quality

2. German technology, imported equipment, continuous casting process production

3. The product quality is stable, with no refractory residue and minimal impurities, meeting European quality requirements

4. Stable expansion coefficient, suitable hardness, compatible with all brands of porcelain powder on the market, and tighter bonding between metal and porcelain

5. Easy to melt, good water flow, high casting success rate

6. The casting has low oxidation, good toughness, high strength, easy polishing, and high brightness, making it easy to obtain a white and bright surface of the bridge crown

7. Free of nickel and beryllium, strong corrosion resistance, good biocompatibility, and guaranteed patient health

8. Registered with the National Medical Products Administration and tested by the National Center for Disease Control and Prevention laboratory, ensuring safety