Our Strengths

Abundant Inventory
A lot of Certified Vehicles
Operated by PROTO CORPORATION;
a Pioneer in Automotive
Information Services
a Pioneer in Automotive
Information Services

PROTO
CORPORATION is a company that manages Japan's largest used car information site
“Goonet”.
Since we are cooperating with second-hand car dealers all over Japan, we can offer the perfect car for you from our abundant inventory.
In addition, the PROTO Group is developing a service called “Goo KANTEI”, in which an appraiser of the Japan Automotive Appraisal Association (JAAA), a third-party organization, appraises used cars.
Since we are cooperating with second-hand car dealers all over Japan, we can offer the perfect car for you from our abundant inventory.
In addition, the PROTO Group is developing a service called “Goo KANTEI”, in which an appraiser of the Japan Automotive Appraisal Association (JAAA), a third-party organization, appraises used cars.

GOONET EXCHANGE CO.,
LTD. is a subsidiary company of PROTO
Corporation which operates automobile information service called “Goo” in
Japan.
As PROTO Group, which consists of more than 10 companies in provide a variety of automobile related services, many of which are leading shares in their specialized fields.
Our aim is to be helpful to people by delivering used cars of superior quality to the world as well as by providing useful automobile related information which PROTO Group has cultivated over the years.
As PROTO Group, which consists of more than 10 companies in provide a variety of automobile related services, many of which are leading shares in their specialized fields.
Our aim is to be helpful to people by delivering used cars of superior quality to the world as well as by providing useful automobile related information which PROTO Group has cultivated over the years.
Who Will Respond?

Khemraj Garbuja
Sales Supervisor
Speed, kind,
and accurate information.

Shinya Kaneko
Always positive
for our customers.
for our customers.

Miina Ihara
Motivation is the passion
to achieve.
to achieve.

Hiroko Yamada
Always close
communication with you.
communication with you.

Akari Miyazaki
Always give personalized
service to each and every customer.
service to each and every customer.

Misato Mano
Deliver new journey
for your life.
for your life.

Yukari Sako
Meet your demand with all my heart.

Corporate Overview
-
Name
PROTO CORPORATION
-
Capital
¥1,849 million
-
Founded
October, 1977
-
Director
Kenji Kamiya President
-
Number of Employees
Consolidated: 1,456 (Parent: 577)
*As of March, 2020
Location
Head Offices
NAGOYA 23-14, Aoi 1-chome, Naka-ku, Nagoya
460-0006, Japan
TOKYO 18-1, Nishi-shinjuku 6-chome, Shinjuku-ku,
Tokyo 160-0023, Japan
Branch Offices
- Sapporo
- Sendai
- Takasaki
- Tokyo
- Nagano
- Hamamatsu
- Nagoya
- Kanazawa
- Osaka
- Hiroshima
- Matsuyama
- Fukuoka
- Kumamoto