Ring mechanism 1) Different shapes of ring: D ring, R ring, Q ring... 2) Different sizes of base: 15mm, 17mm, 20mm, 26mm,   36mm...etc 3) Different sizes of lenght: 123mm, 127mm, 133mm, 210mm, 280mm, 292mm... etc 4) Different ring's No.: 2 rings, 3 rings, 4rings, 6 ring... etc 5) Competitive price with superior quality 6)...

It is a great pleasure to introduce ourselves, JMD INTERNATIONAL LIMITED. Our company JMD INTERNATIONAL LIMITED is a Hong Kong based company which has Representative office and factory in Guangdong. We are leading manufacturers producing Lever Arch File, LEVER ARCH MECHANISM, OTHER ACCESSORIES FOR LEVER ARCH FILE and RING MECHANISM in China...