Yasui Co., Ltd.

Yasui Logo

About Yasui: Tradition and Innovation

For nearly a century, Yasui has been a reliable presence across Japan, and now globally.

Always Made in Japan

Yasui Co., Ltd. was founded in 1930 in Osaka as a printing company. We later broadened into areas including injection molding (mainly medical device parts) and medical products (original and OEM).

We are ISO 9001 and ISO 13485 certified, reinforcing quality control and management to meet high international standards.

We applied 90+ years of innovation and quality control in Japanese manufacturing to develop koplight™, an original design that meets specific clinical needs. Yasui Medical is aggressively expanding its global reach, bringing Made in Japan quality to the world’s markets.

Yasui medical manufacturer, ISO 14664-1 class 8/100,000 clean room

How We Do Business – Our Policies

Since the 1930s and our origins as a printing company, Yasui has been among the countries considered the soul of the Japanese economy – the small- to mid-sized enterprises. Our policies guide our work so we can better serve you.


1. As a manufacturer, continually improve our knowledge and technology, exceed customer expectations, contribute to the local community

2. Aim for value-added management and inspires our workers.

3. Strive to conserve resources to make the 21st century a wonderful one.


As a medical device manufacturer, we are committed to our customers using our products with confidence, and that we secure trust and contribute to society. We do this through:

1. Compliance with laws and regulations

2. Ensuring product quality, efficacy, and safety

3. Ensuring we maintain quaity management

Safety & Environment

Ensure safety through technology and our own actions.

Work for safety, accident prevention, and environmental protection.

Key Points in Yasui's History

1930 Yasui Yukodo Co., Ltd. established as a printing business in Osaka
1940s Relocated head office to Miyazaki, southern Japan
1967 Name changed to Yasui Co., Ltd., which we retain to this day. Expanded into polystyrene applications.
1977 Established injection molding plant and business
2000 ISO 9001 certification obtained
2012 Medical device manufacturing license acquired from Ministry of Health, Labour and Welfare of Japan, began development of Yasui original medical devices
2014 ISO 13485 certification achieved
2016 2nd-class medical device marketing license obtained from Ministry of Health, Labour and Welfare of Japan

Launched koplight™ in Japan market and exhibited at Medica in Düsseldorf, Germany (and every year since, other than 2020, when it was cancelled)

2017 Medical Department established, exhibited at Medical Fair Thailand
2018 koplight™ received prestigious Good Design Award
2020 Exhibited at Arab Health Trade Fair, Dubai


Yasui Medical is part of Yasui Co., Ltd., with expert medical supervision.

Dr. Shimizu with Yasui Co., Ltd.

Yusuke Shimizu, MD

Medical Adviser
Dr. Shimizu is a professor and is Chief of the Department of Plastic and Reconstructive Surgery at a university in Japan. He conceived the koplight™ light retractor; based on a continually pressing need for well-lighted, hygienic surgical retractors. He uses the koplight™ in a wide range of surgeries.
President of Yasui Co., Ltd.

Michiomi Horita

After managing Yasui's original printing business for many years, Mr. Horita assumed the top leadership role. He prioritizes safety and quality above all, in all of Yasui's products from all departments. He pushes for technical innovation and new materials together with continual improvement of existing products, to exceed customers' expectations.

Yasui Group & the SDGs

The Yasui Group fully supports the United Nations Sustainable Development Goals (SDGs) and will continue to help in realizing a sustainable society specifically through the following SDGs.

Employees’ safety and their physical and mental health
Creating a rewarding work environment that respects diversity
Reducing industrial waste generated in manufacturing
Suggesting equipment and energy-saving measures to reduce CO2 emissions
Promoting environmental conservation activities and protecting marine resources

Where We’re Located

Headquarters and Main Plant

2725 Oazakakusa, Kadogawa-cho, Higashiusuki-gun, Miyazaki 889-0697, Japan

-Printing Department, Expanded Polystyrene Department, Injection Molding Department, Medical Department, R&D Department

Kagoshima Sales Office and Plant

429-1 Kokubukawauchi, Kirishima-shi, Kagoshima 889-4314, Japan

-Expanded Polystyrene Department – Kagoshima branch

Fukuoka Sales Office

Ambiente Ohashi Fukuoka Bldg. 2F #202, 2-3-4 Mukaino, Minami-ku, Fukuoka-shi, Fukuoka 815-0035, Japan

-Commercial Department

Tokyo Sales Office

Ryowa Bldg. 6F, 3-6-1 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan

Other sales offices located in Nichinan, Nobeoka, and Hyuga

Yasui Co., Ltd. affiliates

Yasui Plastic Co., Ltd.

549 Miyazako, Ono-machi, Bungoono-shi, Oita 879-6443, Japan

Yasui Pack Co., Ltd.

1659 Tanigawa, Tachibana-machi, Yame-shi, Fukuoka 834-0074, Japan

Yatsushiro Packaging Materials Co., Ltd.

Office Bldg. #2-A, 20-10 Chuodori, Yatsushiro-shi, Kumamoto 866-0844, Japan

Yasui Packaging Materials Ltd.

37 Jonan-machi, Kagoshima-shi, Kagoshima 892-0835, Japan