
KAGLA (registered trademark number 5823014), uses glass material unlike gravestones that use mainly stone, achieving embossing of colors and patterns that have not been easily expressed with just stone. It uses durable cast glass (patent number 6864878) that can handle Japan’s climate. With exposure tests carried out in Hokkaido and Okinawa, it has excellent results and reliability when it comes to durability (As of 2023, it has not cracked once due to heat exposure). They are the first to manufacture gravestones that use Japanese-made cast glass.
| Oki Seki Co., Ltd. | |
|---|---|
| Address | 11F Socio Isago Bldg., 1-10-2 Isago, Kawasaki-ku, Kawasaki, 210-0006 JAPAN |
| Tel | +81-44-221-1114 |
| Fax | +81-44-221-2233 |

This structure has the gas that forms during welding go through the upper part of the ferrule. The collar shape of the welded part becomes smooth, and the fatigue strength of the welded part is improved compared to current ferrules. This contributes to a longer lifespan for buildings and bridges.
In addition, it can limit the amount of metal powder (spatter) that occurs when welding, and it reduces the time needed for removal and cleaning. It is expected to reduce the burden for workers.
| Nippon Stud Welding Co., Ltd. | |
|---|---|
| 地址 | 26F, Shinkawasaki Twin Tower West, 1-1-2, Kashimada, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0058, Japan |
| Tel | +81-44-589-4410 |
| Fax | +81-44-589-4412 |