What you will learn in this article!
- What country’s brand NIMASO is
- NIMASO’s company overview and official name
- NIMASO’s history and reliability (warranty system)
If you have been looking for “glass screen protectors” or “charging cables” on Amazon or Rakuten, you have likely come across the brand “NIMASO.” Because they are reasonably priced and have a large number of reviews, many people may be wondering, “What country is this manufacturer from?” or “Is it a reliable brand?”
In this article, we will provide a detailed explanation of NIMASO’s country of origin, company overview, history, and reliability, based on primary sources such as official information and corporate registration data.
Conclusion: NIMASO is an accessory brand originating from China and operated by a Japanese corporation

To start with the conclusion, NIMASO is a brand originating from Shenzhen, China, and its Japanese corporate entity, NIMASO JAPAN Co., Ltd., handles sales in the Japanese market.
Ms. GadgetIs NIMASO a Japanese manufacturer, or is it overseas?
Mr. GadgetWhile the NIMASO brand trademark is held by a company in Shenzhen, China, operations for the Japanese market are conducted by a Japanese corporation. In other words, the accurate description is “a brand originating from China with a corporate entity in Japan.”
We have summarized the basic information about NIMASO in a table.
| Item | Details |
|---|---|
| Brand Name | NIMASO |
| Japanese Corporation | NIMASO JAPAN Co., Ltd. |
| Former Company Name | Kōmatsu Co., Ltd. |
| Establishment | March 2017 (Corporate incorporation) |
| Brand Establishment | November 2015 |
| Headquarters Location | 1-6-7 Inukura, Miyamae-ku, Kawasaki-shi, Kanagawa |
| Representative | Xinjin Lin |
| Chinese Trademark Registration | Shenzhen Yioumai Technology Co., Ltd. |
| Business Activities | Development, manufacturing, and sales of smart device-related accessories |
Ms. GadgetSince there is a corporation in Japan, does that mean customer support is also available in Japanese?
Mr. GadgetThat is correct. NIMASO JAPAN Co., Ltd. handles customer support within Japan, making inquiries and warranty claims available in Japanese.
NIMASO Company Overview

Basic Information on NIMASO
NIMASO JAPAN Co., Ltd. is a company that primarily develops accessories for smartphones and tablets. It was established in March 2017 as “Kōmatsu Co., Ltd.” in Minato-ku, Tokyo. After relocating via Yokohama, it is currently headquartered in Miyamae-ku, Kawasaki City, Kanagawa Prefecture.
On September 14, 2023, the company changed its name to “NIMASO JAPAN Co., Ltd.,” unifying the brand name and the corporate name. Its corporate number is “2010501040822,” which can also be verified on the Ministry of Economy, Trade and Industry’s gBizINFO portal.
Ms. GadgetWhy did it change from Kōmatsu Co., Ltd. to NIMASO JAPAN?
Mr. GadgetAccording to the company’s press release, the purpose was to achieve consistency between its business activities and corporate philosophy. It is believed that as the recognition of the “NIMASO” brand name grew sufficiently, the brand name was adopted for the company name as well.
The Japanese corporate entity is relatively small, with 4 full-time employees and 19 part-time staff (as of September 2023), but product development and manufacturing are reportedly conducted in collaboration with affiliated companies in China. A branch office was also established in Shenzhen, China, in 2017, operating business across a Japan-China framework.
Sales channels are extensive. In addition to e-commerce sites such as Amazon, Rakuten, Yahoo! Shopping, and Qoo10, products are sold directly through the official website and at major electronics retailers such as Yamada Denki, Yodobashi Camera, and Bic Camera.
NIMASO’s History and Reliability

NIMASO’s Chronology
Organizing NIMASO’s history in chronological order yields the following:
NIMASO brand established, sales begin on Amazon.co.jp
Incorporated as Kōmatsu Co., Ltd. in Tokyo
Established a branch office in Shenzhen, China
Changed company name to “NIMASO JAPAN Co., Ltd.”
Expanding across Japan, the US, Europe, Southeast Asia, and the Middle East
Ms. GadgetGiven that it is a brand dating back to 2015, does that mean it has a history of over 10 years?
Mr. GadgetYes, as a brand it was established in 2015, giving it a track record of over 10 years. While the Japanese corporate entity was established in 2017, it entered the Japanese market through sales on Amazon even prior to that.
With a history spanning over 10 years since its brand establishment and approximately 9 years since its corporate incorporation, NIMASO has gained a certain level of recognition in the smartphone accessories market. Beyond Japan, it is also expanding into global markets such as the United States, Europe, Southeast Asia, and the Middle East.
NIMASO’s Quality Control and Reliability
A key point to focus on when evaluating NIMASO’s reliability is its comprehensive warranty system.
- Standard Warranty: 12 months from the date of purchase
- Extended Warranty: Through member registration, glass film and tablet film warranties can be extended up to 42 months (12 months standard + 30 months extension), and other products up to 18 months (12 months standard + 6 months extension)
Ms. GadgetA warranty of up to 42 months is quite long, isn’t it?
Mr. GadgetIt is quite generous for smartphone accessory warranties. According to the official website, it covers not only initial defects but also bubble inclusion during application and natural damage.
However, please note that the warranty period varies depending on the product.
Additionally, some of their case products have acquired SGS US Military Standard (MIL-STD-810H) shock resistance certification, reflecting a strong awareness of quality control. The fact that the Japanese corporation serves as the customer support contact point also contributes to peace of mind.
Summary: Is NIMASO a Reliable Brand?

Let’s review the key points of this article.
Key points of this article!
- NIMASO is a brand originating from Shenzhen, China, operated by the Japanese corporation “NIMASO JAPAN Co., Ltd.”
- Former company name was “Kōmatsu Co., Ltd.,” changed to the current name in 2023
- Has a track record of over 10 years, with the brand established in 2015 and the corporation incorporated in 2017
- Features a warranty system of up to 42 months with a well-developed support structure
- Available through a wide range of sales channels including Amazon, Rakuten, and electronics retailers
Ms. GadgetUltimately, is NIMASO a brand you can safely buy from?
Mr. GadgetIt is a brand backed by over 10 years of track record and a support system provided by a Japanese corporate entity. Its flagship products, particularly glass screen protectors and cables, have garnered numerous reviews on Amazon.
While some people may be concerned about the brand’s origins, the fact that it has a corporate entity in Japan with established Japanese-language support and warranty systems is a reassuring point worth evaluating. For those looking for reasonably priced smartphone accessories, NIMASO can be considered a strong contender.
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This article was originally written in Japanese and has been translated.



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