- It has the section to push out foreign substance; so periodic cleaning is no need.

- With use of durable strong materials, it has very high durability against wheel impact and abradability .

- Shearing is easy, so it has good availability as vertical joint, and it is also good for horizontal joint of small bridges

- With simple structure, installation is very easy, and with cut manufacture, speedy installation and economical maintenance are possible.

- With low depth of BLOCK OUT, the depth of slab is shallow. And even in place of small gap, it can be installed well.

- Vertical joint is mostly made as the whole length of bridge, so connection of products is unavoidable, however these parts have the weak point of leakage. Accordingly, NLJ plays the role of perfect waterproof by strengthening jointing area and in case of some damages, there is no burden of whole replacement.

- It has duplex waterproof structure even though the height of expansion joint is low, so it has high reliability of waterproof and there are drainage devices at both ends of expansion joint, so it also has high drainage.

- Bolt type pre-setting device that can be preset according to temperature and field conditions makes setting at the field possible and it also improves the flatness.

- As water expansion-resistance material is attached, you can completely seal the space between the fixed concrete and the expansion joint device.