Hangzhou Yongyang Traffic Equipment CO,. LTD is the pioneer of Piston Ring Manufacture Industry. The advanced technology and creative product are highly praised by the user worldwide. From the beginning, we strictly control the quality of our product. And the top Manufacture Equipment and Advanced Inspection Set assure the high quality of our product.

We fetch in the original Manufacture Equipment from Japan. Such as High Exactitude Two-Face Grinding Machine. Double Steel Ring is made from High Chrome Steel. After Chromeplate Disposal on outer surface, the Intention, Anti-Grinding, Anti-High Temperature is much improved. After the disposal of Nodular Cast Iron? High Temperature Gravitation Iron Irrigation? Hotness Treament, the stabilization and anti-grinding are much better. Oil Ring Steel Patch is made from the Imported Steel. Ring Pair is made with Titanizing Tech
(Voluntary Standard QC/T554-1999)