History

Read the times, grasp the needs,
Taking on the challenge of technological development,
We have built history.

Since its founding in 1885 (Meiji 18) to the present, TANAKA has continued to grow alongside Japan's development and has expanded into the world with its technological prowess.

1885 - 1945

From Founding to World War II

TANAKA, which was founded as a coin dealer, shifted its focus to the industrial use of precious metals alongside Japan's industrialization. The Company developed a series of platinum (Pt) industrial products, including platinum wire and platinum gauze for catalysts, and supported the industrialization of modern Japan.

1885Meiji 18
EJIMAYA TANAKA SHOTEN is founded in Chuo City, Tokyo.
1885 Meiji 18
Founder: UMEKIJI TANAKA
1853 (Kaei 6) - 1936 (Showa 11)

TANAKA's founder, UMEKICHI TANAKA, trained at a pawnshop called EIJIMAYA in Tokyo before opening EIJIMAYA TANAKA SHOTEN. The site of its founding, Kitajima-cho, Nihonbashi, Tokyo (now Kayabacho, Chuo-ku, Tokyo), was the location of TANAKA's headquarters until 2006. At the time of its founding, the company had about 10 store staff, 10 factory workers, and 4 decorative artisans. Its business involved purchasing 1-sen copper coins and 5-sen cupronickel coins, dividing them into smaller amounts in units of 100 yen, and exchanging them with merchants for a fee. The company later expanded into bullion trading and began purchasing foreign gold coins from places such as the foreign settlement in Yokohama, melting and refining them, and selling them. The technology developed during this period would later prove very useful in the industrial use of precious metals.

1892Meiji 25
Yamakami Kamekichi opened Shimizu Shoten (later Yamazaki Shoten and then TANAKA) in Nihonbashi Bakurocho, Tokyo.
1892 Meiji 25
Yamazaki Kamekichi 1870 (Meiji 3) – 1944 (Showa 19)

After serving as an apprentice at Shimizu Shoten, a store run by his relatives, Yamazaki Kamekichi took over the store in his youth. He then opened a new store of the same name in Bakurocho, Nihonbashi, dealing in the manufacturing and wholesale of precious metal jewelry and art objects. The store later moved to Nihonbashi, Tokyo, and was renamed Yamazaki Shoten. The store gained a reputation for handling watches and precious metals, and also handled diamonds, which had just begun to be introduced in Japan. In 1926 (Taisho 15 / Showa 1), the store moved to Ginza, Tokyo, and changed to retail.

In 1930, TANAKA took over the management of Yamazaki. After the war, it continued to operate for many years under the name GINZA YAMAZAKI, and has been a familiar presence in the area. It is now GINZA TANAKA.

Contributing to the development of the precious metals industry, TANAKA has also worked to establish the notation used to indicate the purity of gold, such as “K24” and “K18.”

This mechanical pencil was manufactured and sold by Yamazaki Shoten and has become a long-selling product. It is stamped with the brand mark “HOSIESU,” which is currently used on TANAKA's jewelry products. Photo by: Shinichiro Inoue

190740th year of the Meiji era
Successfully refined platinum from discarded light bulbs and processed it into platinum wire. Awarded for exhibiting platinum scientific and industrial instruments at the Tokyo Kankyo Fair.
1907 40th year of the Meiji era
Platinum by TANAKA, exhibited at the Tokyo Kangu Expo

TANAKA began processing used and discarded light bulbs at Tokyo Electric Light Company, Japan's first electric power company (now the origin of Tokyo Electric Power Holdings, Inc.), which was adjacent to TANAKA. Platinum was used in light bulbs at that time, and TANAKA succeeded in melting and refining it to process platinum wire.

In addition, we also manufactured platinum-made scientific and chemical laboratory products such as crucibles, evaporating dishes, electrodes, and spatulas. These were exhibited at the Tokyo Industrial Exhibition held at Ueno Park in Tokyo, where we received awards.

1914大正3年
Manufacturing platinum electrode plates required for the production of chlorates for explosives
1914 大正3年
Furoshiki from the TANAKA SHOTEN era (left) and a business card used by TANAKA's founder, MAEKI TANAKA (right). The words “PLATINUM,” “GOLD,” and “SILVER” are arranged in that order.

Platinum was also required for the manufacture of military products during World War I. For example, large platinum electrode plates are used in the equipment for producing potassium chlorate, which is a raw material for the manufacture of explosives. As a result, the demand for platinum increased. TANAKA also supplied platinum to these manufacturing companies.

Platinum was also used as a material for syringes used on the battlefield. However, due to a decrease in platinum imports during World War I, the Army began developing syringes using nickel as a substitute under the guidance of the Army Medical Materials Depot, and manufactured and sold them in large quantities.

TANAKA, which had come to focus on handling platinum in this way, began to use "Platinum, Gold, Silver" in its newspaper advertisements, furoshiki (wrapping cloth), and business cards after becoming a corporation (in 1918) with platinum listed first.

1915大正4年
Completion of platinum-iridium alloy injection needle
1918大正7年
TANAKA SHOTEN Co., Ltd.
1921大正10年
Start of production of contact materials for telecommunications equipment
1923大正12年
General Agency Agreement for Platinum and Palladium with the Soviet Union
1923 大正12年
Oil painting "Peasant Girl" presented by the Soviet Union government

At this time, Russia accounted for 70% of the world's platinum production. Therefore, Ichiro Tanaka, the second president of TANAKA, began negotiations with Russia for the import of platinum. During this time, the Russian Revolution was underway, and the Soviet Union was established. In 1923 (Taisho 12), a General Agency Agreement was signed with the Soviet government.

At that time, the Soviet government presented the oil painting "Peasant Girl" by O. Bichikov, who was the court painter of the Russian Emperor. It is said that the painting was originally displayed in the Kremlin Palace.

1930昭和5年
Successful in domesticating platinum gauze for catalysts
1930 昭和5年
Platinum gauze for catalysts that shaped TANAKA's direction (Photo taken after World War II)

After successfully domesticating platinum fine wire, the Company began developing a technology for weaving platinum gauze using this wire. Since processing platinum is more difficult than processing gold or silver, the Company invited a French engineer named Kine to conduct research. As a result, the Company succeeded in manufacturing Japan's first platinum gauze for catalysts. This research was also applied to the successful development of platinum iridium wire. This technology would later be applied to the manufacturing of gold ultra-fine wire and lead to the manufacturing of bonding wire.

1934昭和9年
Purchases and melts silver coins from China and Korea, then exports them to Johnson Matthey in the UK.
1939昭和14年
Completion of Platinum vs Platinum-Rhodium Thermocouple
Completion of Platinum-Iridium Alloy Wire for Electric Detonators
1943昭和18年
Company name changed to TANAKA PRECIOUS METAL TECHNOLOGIES CO., LTD.
1946 - 1968

Japan's period of rapid economic growth

After post-war recovery, the driving force behind high economic growth was the development of industrial technology. TANAKA also adopted the latest technologies and worked on product development, growing significantly.

1948昭和23年
Designated by the Ministry of Health, Labour and Welfare as a manufacturer and seller of precious metals for dental use
1949昭和24年
Started manufacturing nozzles for chemical fibers
1949 昭和24年
Process in the early postwar period for manufacturing nozzles in which drilling is performed

The textile industry rapidly developed after the war. In order to meet the needs of this industry, we began manufacturing nozzles for chemical fibers at a partner factory in Kawanishi City, Hyogo Prefecture. Initially, the technology for making holes in nozzles was primitive, and holes were made by spinning thick paper placed on a iron base.

1952昭和27年
Designated as a 'Gold Dealer' by the Ministry of Finance
1955昭和30年
Started production of contacts for crossbar telephone exchanges upon request from NTT
1955 昭和30年
Micro profiles (contact tapes) were mainly manufactured at the Hiratsuka Plant.

One of the policies implemented by GHQ for Japan's postwar reconstruction was the development of telecommunication networks. Among these, the adoption of automatic switching systems that automatically connect telephone lines was promoted, and TANAKA PRECIOUS METAL TECHNOLOGIES was responsible for manufacturing the relays used in these systems.

TANAKA PRECIOUS METAL TECHNOLOGIES conducted import negotiations with the Soviet Union to secure palladium, one of the materials used in contacts. It is said that the negotiations proceeded smoothly as there were ties with TANAKA PRECIOUS METAL TECHNOLOGIES regarding platinum imports before the war.

1960昭和35年
Completion of Hiratsuka Plant
Commencement of production of platinum group plating solutions
1961昭和36年
TANAKA ELECTRONICS CO., LTD. is established and full-scale production of bonding wires for semiconductors begins.
1963昭和38年
Manufacturing of Official Commemorative Medals for the Tokyo 2020 Olympic Games
1963 昭和38年
TANAKA ELECTRONICS's Mitaka Plant, completed in 1963 (Showa 38) in Mitaka City, Tokyo

At this time, the semiconductor industry was still in its infancy. TANAKA ELECTRONICS was established as a joint venture between TANAKA PRECIOUS METAL TECHNOLOGIES and Mitsui Mining & Smelting to manufacture bonding wires used in semiconductor manufacturing.

As we stand on the brink of a new era, we have faced fierce competition with a spirit of challenge based on "doing what others do not." We have worked to improve our technological capabilities.

1964昭和39年
Domestic production of gold ultra-fine wire for IC leads
1964 昭和39年
Started manufacturing bonding wires in Japan, which were all imported at the time.

With the revitalization of the electronic industry, including C, the demand for gold bonding wire (metal ultra-fine wire) has also increased, as it is essential for their manufacturing. The Ministry of International Trade and Industry requested TANAKA PRECIOUS METAL TECHNOLOGIES to develop bonding wire with a diameter of 10 microns (micrometers). Although the company had succeeded in domestically producing platinum wire with a diameter of 10 microns, gold ultra-fine wire had a minimum diameter of 25 microns. After seeking guidance from semiconductor manufacturers, the bonding wire was finally completed in this year. Bonding wire remains one of TANAKA's main products to this day.

1965昭和40年
Established in 1965 as Nippon Electroplating Engineers (now EEJA Ltd.) and began the business of plating solutions and plating equipment
Completed manufacturing technology for micro profiles (contact tapes)
Started manufacturing platinum-nickel alloy ball contacts
1965 昭和40年
Exterior of EEJA's office at the time of its establishment

In the 1960s, precious metal plating began to be used for the contacts of electronic devices. In response, TANAKA PRECIOUS METAL TECHNOLOGIES established ELECTROPLATING ENGINEERS OF JAPAN (abbreviated as EEJA) in a joint venture with Celltech, a company based in the United States. Operations began at a factory in Hiratsuka City, Kanagawa Prefecture. EEJA manufactured plating solutions and plating equipment, while TANAKA PRECIOUS METAL TECHNOLOGIES was responsible for sales. This joint venture was one of the major factors that allowed TANAKA to establish a presence in the electronics industry.

1969 - 1990

The high-tech age has further evolved

With the rise of the computer industry, we have provided precious metal products for use in various high-tech products. In addition, as the liberalization of the gold market has led to the popularization of gold and increased interest in it, we have also engaged in activities to promote awareness of gold.

1969昭和44年
TANAKA and Johnson Matthey form joint venture TANAKA MATTHEY
1970昭和45年
TANAKA's Establishment of TANAKA
1949 昭和24年
Process in the early postwar period for manufacturing nozzles in which drilling is performed

The textile industry rapidly developed after the war. In order to meet the needs of this industry, we began manufacturing nozzles for chemical fibers at a partner factory in Kawanishi City, Hyogo Prefecture. Initially, the technology for making holes in nozzles was primitive, and holes were made by spinning thick paper placed on a iron base.

1973昭和48年
Completion of Isehara Plant
1974昭和49年
Established Heesung Metal Co., Ltd., a joint venture with the LT Group, in Korea.
Ichikawa Factory completed
1978昭和53年
Recognized as an accredited refiner and assayer by the London Bullion Market Association (LBMA) , the registration and accreditation body of the London gold market.
1978 昭和53年
1 kg gold bar refined and melted by TANAKA PRECIOUS METAL TECHNOLOGIES

In 1973, the Japanese government liberalized the import of gold. This led to a growing interest in gold in Japan. Furthermore, in 1978, gold was completely liberalized with the permission of exports. In the same year, TANAKA PRECIOUS METAL TECHNOLOGIES sent pure gold bars it had melted and refined in-house to the London Gold Market, the most prestigious gold market in the world, and became the first company in Japan to be accredited as an official melter and assayer.

1979昭和54年
TANAKA ELECTRONICS SINGAPORE (PTE.) LTD. established
and began production of cadmium-free contact materials
1963 昭和38年
TANAKA ELECTRONICS's Mitaka Plant, completed in 1963 (Showa 38) in Mitaka City, Tokyo

At this time, the semiconductor industry was still in its infancy. TANAKA ELECTRONICS was established as a joint venture between TANAKA PRECIOUS METAL TECHNOLOGIES and Mitsui Mining & Smelting to manufacture bonding wires used in semiconductor manufacturing.

As we stand on the brink of a new era, we have faced fierce competition with a spirit of challenge based on "doing what others do not." We have worked to improve our technological capabilities.

1980昭和55年
First in Japan to introduce a "Gold Monthly Purchase System"
1980 昭和55年
Various pamphlets created to explain the Fixed Amount Purchase System

Gold became a familiar presence for the general public after its complete liberalization in 1978. To use gold as a means of wealth formation, a gold monthly savings plan was devised. This involves purchasing gold for a fixed amount of money, with TANAKA PRECIOUS METAL TECHNOLOGIES buying gold daily on behalf of customers with a fixed amount of funds. This is done according to the "dollar-cost averaging" method, where more is bought on days when gold prices are low and less is bought on days when prices are high. This method has the advantage of allowing gold to be purchased at a lower price than the average.

In 1984, the Platinum Fixed Price Purchase System was also launched. It has become one of the Group's representative products for asset formation and asset preservation through "steady accumulation."

1982昭和57年
Completion of TANAKA ELECTRONICS SAGA
1985昭和60年
On the 100th anniversary of its founding, TANAKA publishes commemorative book, Science of Precious Metals.
1985 昭和60年

This year marks the 100th anniversary of the founding of TANAKA's predecessor, Eishimaya TANAKA SHOTEN, in 1885 (Meiji 18). At that time, the president, Junichiro TANAKA, decided to publish a book on the industrial value of precious metals, rather than holding a typical anniversary event, as he wanted to do something that would be useful to society. The authors were TANAKA's engineers and other prominent researchers of precious metals in Japan. The book consists of three volumes: "Preface," "Fundamentals," and "Applications."

This book served not only as a commemorative monument but also as a means of reaffirming TANAKA's corporate culture of respect for technology. A revised edition of the book, titled "Applied Edition," was also published in 2001.

1986昭和61年
TANAKA PRECIOUS METAL TECHNOLOGIES (TAIWAN) CO., LTD. established
1990平成2年
YAMAKI CORPORATION Changes Company Name to TANAKA PRECIOUS METALS JEWELRY
Completion of Technology Development Center (Hiratsuka Technical Center)
1990 平成2年
(Left) GINZA TANAKA's Ginza Main Store as of November 2025. (Right) The Yamazaki Building, completed in 1920 (Taisho 9), which served as the inspiration for the current store's exterior.

YAMAZAKI, which has been known as "Ginza Yamazaki" since before the war, has maintained a unique presence in the precious metal jewelry industry. Under the slogan of "Reliable Quality and Appropriate Prices," the company develops its products. It has also implemented reforms, such as allowing female employees at sales outlets to set selling prices. By changing its name to TANAKA, the company aims to further foster a sense of security and trust.

1991 - Present

Looking toward a future of diversification

The fields in which precious metals are used are continuing to expand, and as a result, TANAKA's products are becoming increasingly diverse. We are also increasing our bases overseas and are enhancing our system for globally providing products and technologies. With our unwavering trust and reliability, we will continue to move toward the future.

1991平成3年
Nippon PGM Co., Ltd. established
Iwate Plant completed
1994平成6年
Established TANAKA ELECTRONICS (MALAYSIA) SDN. BHD.
Completed TOMIOKA FACTORY
TANAKA ELECTRONICS announces gold bonding wire GPG type
1995平成7年
EEJA to Launch Fully Automatic Plating System for 8-Inch Semiconductor Wafers
1996平成8年
TANAKA L.T. INTERNATIONAL CO., LTD. established
2001平成13年
Establishment of TANAKA ELECTRONICS (HANGZHOU) CO., LTD.
2002平成14年
TANAKA TAISEI CO., LTD. Changes Store Name to “GINZA TANAKA”
2003平成15年
Appointed as an Approved Assayer of the London Bullion Market
2003 平成15年
(Left) Mark of LBMA-accredited Referee. (Right) Certificate of Accreditation as Referee issued by LBMA.

We have been appointed as an “Accredited Assayer” of gold and silver by the LBMA (London Bullion Market Association), the accrediting body of the London gold market. We are the only company in Japan and one of seven in the world.

TANAKA PRECIOUS METAL TECHNOLOGIES was accredited as an official melting and assaying company in 1978. Subsequently, with the expansion of the gold market worldwide, the LBMA began to extend membership to companies outside the UK. TANAKA PRECIOUS METAL TECHNOLOGIES's track record was recognized, leading to its appointment as an official assessment company.

2006平成18年
TANAKA PRECIOUS METAL TECHNOLOGIES relocates its head office to Marunouchi
TANAKA ADVANCED MATERIALS (SUZHOU) CO., LTD. established
TBS Tsukuba completed
2006 平成18年

TANAKA PRECIOUS METAL TECHNOLOGIES has relocated its head office from Chuo City, Tokyo, where it has been located since its founding in 1885 (Meiji 18), to Marunouchi, Tokyo. By moving its head office functions to a more convenient location, the Company can respond more quickly and internationally.

2008平成20年
Establishment of TC Catalyst Co., Ltd.
2009平成21年
Launch of RE:TANAKA
Appointed as an Accredited Assayer by the “London Platinum & Palladium Market” (LPPM: London Platinum & Palladium Market)
2009 平成21年

As the term "urban mines" suggests, it is possible to recover and recycle gold and platinum stored at home more efficiently than newly mining these metals by recovering and recycling them. TANAKA has launched the Precious Metal Jewelry Buyback Service "RE:TANAKA" for customers to bring their precious metal jewelry made of gold and platinum to our stores, where we use specially developed X-ray fluorescence testing equipment to assess their purity and buy them.

We have also started purchasing silver since 2014.

2009 平成21年
(left) LPPM mark. (right) Certificate of Accreditation as an Authorized Assayer issued by LPPM.

The London Platinum and Palladium Market (LPPM) was established with the aim of facilitating appropriate trading of platinum and palladium. There are currently six companies worldwide that have been appointed by LPPM as accredited assayers, including TANAKA PRECIOUS METAL TECHNOLOGIES. LPPM has recognized the high standards of analytical and assessment capabilities, as well as the trust and track record that have been cultivated over many years.

2010平成22年
TANAKA PRECIOUS METAL GROUP will be restructured and transitioned to a new structure centered around the pure holding company, Tanaka Holdings Co., Ltd.
EEJA launches world's first plating solution for mounting LCD driver ICs with palladium
Sodegaura Factory completed
2010 平成22年

In this year, TANAKA established a holding company, TANAKA HOLDINGS CO., LTD., and transitioned to a holding company system. The purpose of this transition is to facilitate smoother communication within the Group and to further enhance the flexibility of its operations.

2011平成23年
Established Chengdu Guangming TANAKA Environmental Technology Co., Ltd.
TANAKA ELECTRONICS starts selling silver bonding wire
Completed Isehara Technical Center
2012平成24年
Certified as a full member of the London Bullion Market Association (LBMA), the registered certification body for the London gold market.
TANAKA ELECTRONICS begins sales of highly reliable, halogen-free gold wire, thick copper wire for power devices, and copper wire for general-purpose equipment.
OKI Tanaka Circuit Co., Ltd. established
2012 平成24年

TANAKA PRECIOUS METAL TECHNOLOGIES has been recognized as a full member of the London Bullion Market Association (LBMA). This is the first time for a company in Japan to receive this recognition. With this recognition, TANAKA PRECIOUS METAL TECHNOLOGIES will have voting rights on agenda items discussed at LBMA's general meetings and other events, and will be able to send members to its Board of Directors and subcommittees. This will also give the Company significant influence on the development of the gold and silver markets in Asia. For our customers, this recognition is a sign that we can provide even greater trust and reassurance.

In 2015, the Company was also recognized as a full member of the London Platinum and Palladium Market (LPPM).

2013平成25年
Established Chengdu Guangming Paite Precious Metal Co., Ltd.
Completed the Development Center of the FC Catalyst Center
Started providing bonding materials for ultra-miniature crystal oscillator packages
2014平成26年
EEJA Starts Providing Gold Electrodeposition Solution for Semiconductor Package Substrates That Does Not Use Cyanide Compounds
2015平成27年
TANAKA FOUNDATION FOR METAL RESOURCES established as a general incorporated foundation
Joint development of catalysts for the efficient recovery of tritium from nuclear fusion with JAEA (Japan Atomic Energy Agency)
Start of sales of RAD PLATER, a super-miniature plating experimental device with a semiconductor wafer cup that can form plating similar to mass-produced machines
Recognized as a full member of the London Platinum & Palladium Market (LPPM)
EEJA (Shanghai) Co., Ltd. established
TANAKA America Inc. established
TANAKA ADVANCED MATERIALS (NINGBO) CO., LTD. established
2016平成28年
Start of sales of Platinum Vienna Coin Harmony
Metalor Technologies SA becomes a wholly owned subsidiary and group company of Honda
Platinum catalyst for fuel cells is adopted in Honda's new fuel cell vehicle, CLARITY FUEL CELL
Develops Zika virus detection reagent. First in the world to successfully directly detect Zika virus in blood using the immunochromatography method
2016 平成28年

The Vienna Philharmonic Coin in Gold, issued by the Austrian Mint, has been well received by many customers with TANAKA PRECIOUS METAL TECHNOLOGIES as its general agent in Japan. In April of this year, the Platinum Vienna Philharmonic Coin was newly launched. Like the Vienna Philharmonic Coin in Gold, the obverse features the pipe organ located at the home of the Vienna Philharmonic Orchestra, while the reverse features reliefs of orchestral instruments such as the Vienna horn and harp.

2017平成29年
TANAKA Advanced Materials (Chengdu) Co., Ltd. established
EEJA develops Direct Pattern Plating
2018平成30年
TANAKA PRECIOUS METAL TECHNOLOGIES CO., LTD. has acquired all shares of EEJA from Alent Holdings B.V., which holds 50% of EEJA's shares.
As a result, EEJA will become a wholly owned subsidiary of TANAKA PRECIOUS METAL TECHNOLOGIES.
Start of sample offering for SKe-Lid, a gold-tin-coated quartz glass lid for deep ultraviolet LEDs.
2019Reiwa 1
TANAKA (INDIA) PRIVATE LIMITED established
2020令和2年
Appointed Koichiro Tanaka as President and CEO
2021令和3年
Developed active brazing filler metal/copper composite for power devices
Developed low-temperature-sintering nano silver paste for screen printing
2023令和5年
Establishment of METALOR TANAKA Electrical Materials (Suzhou) Ltd.
2024令和6年
Head office relocated to Kayabacho, the site of its founding
Joint management with LT Group at joint venture LT Metal Co., Ltd. (formerly KISEI METAL Co., Ltd.) discontinued
2025令和7年
TANAKA PRECIOUS METAL GROUP CO., LTD. will shift to a management system centered on TANAKA with the aim of streamlining management and achieving sustainable growth.

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