Description From Their WebSite:

We, the SAYURI International Co.,Ltd. introduce ourselves as a leading new, used and fully reconditioned vehicle dealers in Japan. It was established in 1996 as Japan- Sri Lanka collaboration. Since then, Sayuri International Co.,Ltd. has become one of the largest new, used and fully reconditioned vehicle exporting company.
Our head office located in Kamagaya City, Chiba Prefecture.
Work shop and vehicles yard located in Shiroi city Chiba Prefecture.
At present we have our branch office in Singapore and Sri Lanka.
The related companies are locate in Mauritius, Trinidad & Tobago, United Kingdom (UK), Australia, New Zealand, Jamaica, and Kenya.
SAYURI International Co.,Ltd. has well qualified and skilled Japanese and Sri Lankan staff, speaking language in English, Japanese and Sinhalese.

Our Comments & Observations:

They are a JUMVEA member even though that does not really guarantee anything as far as we know.
Other than this we know nothing more about them nor have we heard feedback.

They also have a sister site where you can search for stock and auction cars called "japanusedcar.net"