KEIWA Incorporated

About Keiwa

HomeAbout Keiwa


We are aiming to become a global KEIWA that contributes to a cheerful world and to future societies.

Since its founding in 1948, Keiwa has never been satisfied with its current status and has always taken the initiative to act first.

We have actively innovated marketing methods, technologies, and various systems in order to proactively, quickly, and accurately respond to the ever-changing needs of customers. This approach is called "dynamic domain", which is our management policy.

Initially, we were founded as a supplier of waterproof paper to the textile industry to support Japan’s postwar reconstruction and then gradually grew as the leading processed paper manufacturer in West Japan. We grew rapidly and achieved a major leap by supplying various function products, such as moisture-proof packaging materials, processing materials, protective sheets for natural gas and oil pipes, to the chemical industry and the steel industry undergoing international expansion. At this point, possessing three distinctive technical systems of sheeting, laminating, and coating, our company had solidified our status as one of the few global manufacturers of function products.

Since then, the company has survived recessions caused by two oil crises and the collapse of the economic bubble. However, due to the spread of the Internet and the advancement of the information society, the field of display devices used for various digital equipment has recently become one of the few "expanding industries" in the period of low growth.

Responding to the needs of the optical industry, we have come up with an innovative solution of the diffusion film-"Opalus". We have obtained unparalleled performance in this niche segment.
Entering this year, we started with customer-oriented marketing and further refined our core technologies of sheeting, laminating, and coating with the addition of Ultra-Precision (high accuracy) technology, with the aim of becoming a manufacturer of functional films and solutions.

Furthermore, along with business expansion, we continue to accumulate and develop technologies to maintain and improve the world environment.

As a global-minded company, we work with our subsidiaries in Japan, Taiwan, China, South Korea, and the United States to promote collaboration with companies around the world.

Based on our business philosophy of "Creating Harmony between Nature and Industry", Keiwa Group will make further contributions to the future of our earth and society.

President and Representative DirectorKeiichi Osamura

Management Principles

Creation of the Harmony
between Nature and Industry.

Human beings benefit considerably from Nature and the products they make.
However, if these products are not in harmony with Nature, their benefits cannot last long.
To achieve this harmony, it is necessary to acquire precise wisdom and technologies based on a long-term perspective and flexible thoughts.
We constantly enhance our creativity and assertiveness as an organization to provide this kind of wisdom and technology.

Management Vision

Contributing to Nature and society by “providing high-quality products"
Aiming to become a mission-oriented global group

Keiwa's Values

Company Overview

Company name KEIWA Incorporated
Established on 28-Sep-1948
President and Representative Director Keiichi Osamura
Corporate Headquarters 3F, Sumitomo Seimei Kayabacho Building, 2 Chome-10-5 Nihonbashi Kayabacho Chuo-ku Tokyo
Capital 906.49 million yen
Business areas

■Optical sheets
Light diffusion sheets used in backlight units of liquid crystal displays, such as smartphone displays, and components for special optical films, such as protective film of light collecting film, etc.

■Function products
Industrial packaging materials added with specific functions (moisture resistance, heat resistance, high durability), industrial processing paper, clean energy materials, and other industrial materials, such as construction materials and agricultural materials

Group companies (consolidated subsidiaries) 4 global companies (1 manufacturing and marketing company, 3 sales companies)

Company History

Hidetaro Osamura established KEIWA Commerce and Industry Co., Ltd. in Kobe
Tokyo sales office opened (currently known as Tokyo headquarters)
Shiga plant established (currently known as Shiga AF Center)
Ogura plant established (currently known as Kyushu plant)
Chiba plant established (currently known as Tokyo plant)
Headquarter building established in Higashi Yodogawa-ku, Osaka
Hidetaro Osamura took over as Chairman and Keiichi Osamura as President
Founder Hidetaro Osamura passed away
At!ack Techno Center I (currently known as Wakayama Techno Center I) established
Company name changed to KEIWA Incorporated
A local company Taiwan Keiwa Inc. established in Taiwan
Suzhou representative office opened in China
At!ack Techno Center II (currently known as Wakayama Techno Center II) constructed
Shenzhen Office opened in China
A local company Keiwa (Nanjing) Co., Ltd. established in China
A local company Seoul Keiwa Optoronics Co., Ltd. established in South Korea
At!ack Techno Center III (currently known as Wakayama Techno Center III) constructed
Ningbo Office opened in China
A local company KEIWA Incorporated USA established in the US
Shenzhen Office moved to Dongguan Office in China
Beijing Office opened in China
Tokyo Headquarters moved (Nihonbashi Kayabacho, Chuo-ku, Tokyo)
Osaka Headquarters moved (Kawaramachi, Chuo-ku, Osaka City, Osaka Prefecture)
Listed on the Second Section of the Tokyo Stock Exchange
Value Creation Center (VCC) established

China Local company「Keiwa (Nanjing) Co., Ltd.」

恵和株式会社 東京本社
Tokyo headquarter (Nihonbashi)

Office Locations

Headquarters Postal code: 103-0025
3F, Sumitomo Seimei Kayabacho Building, 2 Chome-10-5 Nihonbashi Kayabacho Chuo-ku Tokyo

TEL. 03-5643-8700(Main) FAX. 03-5643-6720

【Marketing Department】
Function Products Division 

TEL. 03-5643-8701 FAX. 03-5643-6720

Opalus Division 

TEL. 03-5643-8702 FAX. 03-5643-6720

<Ordering Center>
Function Products Division (Tokyo) 

TEL. 03-5643-8704 FAX. 03-5643-6720

Opalus Division (Wakayama) 

TEL. 0738-32-7708 FAX. 0738-32-7727

【Administrative Department】
Human Resources and General Affairs Division (Tokyo) 

TEL. 03-5643-3780 FAX. 03-5643-6721

Osaka Headquarters Postal code: 541-0048
5F Sanyo Senko Kawaramachi Building, 2-2-7 Kawaramachi, Chuo-ku, Osaka City, Osaka Prefecture

TEL. 06-4707-7150(Main) FAX. 06-4707-7210

【Marketing Department】

TEL. 06-4707-7151 FAX. 06-4707-7210

【Administrative Department】

TEL. 06-4707-7153 FAX. 06-4707-7210

Sales offices
【Kyushu Office】
Postal code: 800-0211 8-48 Shinsone, Kokura Minami-ku, Kitakyushu-shi, Fukuoka Prefecture

TEL. 093-471-0431 FAX. 093-472-3126

【Chofu Branch Office】
Postal code: 752-0953 14-1, Chofu Minatomachi, Shimonoseki-shi, Yamaguchi Prefecture

TEL. 0832-45-2125 FAX. 0832-45-1965

【Moka Branch Office】
Postal code: 321-4357 1-12-2 Shimoonuma, Moka-shi, Tochigi Prefecture

TEL. 0285-82-5570 FAX. 0285-82-7957

Manufacturing Department
【Wakayama Techno Center I】
Postal code: 649-1532 4026-13, Inanbara, Inamicho, Hidakagun, Wakayama Prefecture

TEL. 0738-44-0853 FAX. 0738-44-0793

【Wakayama Techno Center Ⅱ】
Postal code: 649-1532 4026-19, Inanbara, Inamicho, Hidakagun, Wakayama Prefecture

TEL. 0738-44-0853 FAX. 0738-44-0793

【Wakayama Techno Center Ⅲ】
Postal code: 644-0025 1825-17 Aza-Saigodani, Kitashioya, Shioya-cho, Gobo-Shi, Wakayama

TEL. 0738-32-7707 FAX. 0738-32-7727

【Shiga AF Center】
Postal code: 529-1441 332, Gokasho kawanamicho Higashiomi-shi, Shiga Prefecture

TEL. 0748-48-3260 FAX. 0748-48-4904

【Tokyo Plant】
Postal code: 276-0022 1508-1 Kamikoya, Yachiyo-shi, Chiba Prefecture

TEL. 047-483-3501 FAX. 047-485-8596

【Kyushu Plant】
Postal Code: 800-0211 8-48 Shinsone, Kokura Minami-ku, Kitakyushu-shi, Fukuoka Prefecture

TEL. 093-471-0431 FAX. 093-472-3126

Value Creation Center
【Value Creation Center(VCC)】
Postal code: 619-0237
2F KEIHANNA PLAZA Super Laboratory Wing, 1-7 Hikaridai, Seika-cho, Soraku District, Kyoto City

TEL. 0774-98-4251 FAX. 0774-98-4252

Global Subsidiary Locations


Taiwan Keiwa Inc.

33 F, No. 66, Sec. 1, Zhongxiao W. Rd., Zhongzheng Dist., Taipei City 10018, Taiwan (R.O.C.)

TEL. +886-2-2370-0035 FAX. +886-2-2370-0152

【Kaohsiung Office】
7 F, No. 391, Bo’ai 1st Rd., Sanmin Dist., Kaohsiung City 80743, Taiwan (R.O.C.)

TEL. +886-7-311-9237 FAX. +886-2-2370-0152(co-used by offices in Taiwan)

People's Republic of China

Keiwa (Nanjing) Co., Ltd. Nanjing Office and Plant

No.1, Lanxia Road, Moling Industrial Park, Jiangning Economic Development Zone, Nanjing, 211111, China

TEL. +86-25-5215-7713 FAX. +86-25-5215-7723

【Suzhou Office】
Room 709, Shanglv Building, No. 181, Cuiyuan Road, Suzhou Industrial Park, Suzhou, Jiangsu, 215028, China

TEL. +86-512-6761-6881 FAX. +86-512-6761-6882

【Dongguan Office】
Room 1702, Section 4, Chang’an Commercial Plaza, No. 303, South Changqing Road, Chang’an Town, Dongguan, Guangzhou, 523850, China

TEL. +86-769-8150-2788 FAX. +86-769-8150-2798

【Ningbo Office】
Room A070, 4F, Shijidongfang Plaza, No. 1083, East Zhongshan Road, Yinzhou District, Ningbo, Zhejiang, 315042, China

TEL. +86-574-8689-9942 FAX. +86-574-8689-9913

【Beijing Office】
Room 1118, Jiamei Building, No. 16, South Guangshun Avenue, Chaoyang District, Beijing, 100102, China.

TEL. +86-10-6558-8179 FAX. +86-10-6558-8177

South Korea

Seoul Keiwa Optoronics Co., Ltd.

4F, Into Building, 2, Gangnam-daero 79-gil (Banpo-dong 737-19), Seocho-gu, Seoul, 06541, ROK

TEL. +82-2-755-1216 


KEIWA Incorporated USA

Regus 6th Floor #607,2033 Gateway Pl, San Jose, CA 95110 U.S.A.

TEL. +1-408-573-6000 

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At Keiwa Inc., we flexibly develop and create products to meet all the requirements and demands of customers.
Please kindly contact us for further information.

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