2. Company Proffile
  3. History


1933 Oct.
Inauguration of business
"Kato Hatsujo Seisakusho" founded by Saburo Kato, age of 22, in Honjo, Kikukawa-cho, Tokyo, with five employees.
1936 Mar.
Moved to Yokohama
The head plant was moved to Iwai-cho, Hodogaya-ku, Yokohama-shi. Became the only specialized manufacturer of springs in Kanagawa prefecture. 13 employees.
1937 Mar.
Started business with Ford Japan Ltd.
Prototype parts were delivered through Ford Japan to Ford Motor Company in the U.S. They passed the strict specification tests and started to be supplied as genuine Ford parts.
1938 Jan.
Established the Second Plant
Obtained a loan, for the first time, from the Industrial Bank of Japan (present Mizuho Corporate Bank).
1939 Sep.
Incorporated as a joint-stock corporation
Kato Hatsujo Co., Ltd. was established with capital of 100,000 yen (300 million yen in terms of present value).
1942 Mar.
Established Osaka Branch Office
Established a sales base in Asahi-cho, Kita-ku, Osaka.
1957 Jun.
Established Yokohama Plant
The demand of springs rapidly grew. Established a new plant in the site of 6,600 m2 in Kariba-cho, Hodogaya-ku, Yokohama-shi.
1963 Jul.
Won the Prime Minister's Prize for Safety Contributors
The only winner among the medium to small sized companies throughout Japan.
1964 Oct.
Established Totsuka Plant
Established a light-gauge-steel one-story plant of 635 m2 at the site of 3,300 m2 in Kamiyabe-cho industry complex, Totsuka-ku, Yokohama-shi.
1968 Mar.
Introduced "In-house Skill Test System" for the first time in the spring industry
175 candidates were examined for the first test. The pass rate was 89%.
1969 Oct.
Established a tie-up with a U.K. fastener manufacturer
Technical tie-up with FT Fasteners Inc. (present TRW Inc.). Manufactured plastic fasteners for the first time as a spring manufacturer.
1969 Oct.
Established Moka Plant
Established a large plant of 3,000 m2 equipped with modern equipment.
1972 Oct.
Received inquiries from overseas companies
Established the Overseas Department in June of the year. Concluded an annual export contract with GE Company and Cumins Engine Company in the U.S.
French Spring Association visited PIOLAX.
1973 Oct.
Established the first Japan-U.S. joint venture
Established K.P. Products Corporation as a joint venture with Peterson American Corporation, a major US spring manufacturer.
1974 Feb.
Completed the construction of a new head office building as the 40th anniversary memorial project
9-story building in Iwai-cho, Hodogaya-ku, Yokohama-shi. 600 employees. Annual sales of 6 billion yen.
1977 Apr.
Started establishing sales bases throughout Japan
Following capital increase to 240 million yen, sales bases started to be established in major cities.
1979 May.
Established Kyushu Plant
According with the operation start of Kyushu Plant of Nissan Motor, a new plant was established in Iizuka industrial complex in Kaho-gun, Fukuoka.
1982 Sep.
Started to work toward practical application of shape-memory alloy
Through collaborative development with Furukawa Electric and TOYO LIVING, shape-memory alloy was applied to open/close springs for industrial automatic dry warehouses.
1983 Sep.
The 50th anniversary of foundation
Held a celebration ceremony.
1984 Jun.
Kazuhiko Kato acceded as President (age 44)
Saburo Kato, founder and former president, acceded as the chairman of the board of directors.
1986 Nov.
Established KHK of America Inc. in Illinois, U.S. (moved to Michigan in Aug, 1988)
New strategies were launched to prepare for abrupt appreciation of the yen.
1987 Jul.
Started business in Asia
Established a joint venture "PIOLAX of Taiwan Inc." with "San Long Industrial Co., Ltd", a Taiwanese resin maker.
1988 Mar.
Received Nissan Quality Control (NQC) Award
Participated in Nissan Quality Control (NQC) activities and won the award.
Started local production in U.S.
Established "Piolax Corporation" in Canton, Georgia, U.S. Started the production of metal springs for home electric appliances and automobiles.
1990 Jan.
Established KHK Sales Co., Ltd.
Established a sales subsidiary to provide better sales and service for small-lot customers.
Established S.T.K. Co., Ltd.
Established for production of metallic and plastic products in Annaka-shi, Gunma.
1991 Nov.
Completed the construction of the second plant in U.S.
Started manufacturing plastic fasteners for automobiles in Canton, Georgia, U.S. Shifted from export to local production.
1992 Oct.
Established a joint venture in Kyushu
Established K & K Co., Ltd., with KATAKEN SEIKO Co., Ltd., a mold manufacturer for precision metal parts, in Higashi-kunisaki-gun, Oita.
1993 Oct.
Established Shonan Logistic Center, a large-scale distribution base
Consolidated eight warehouses and distribution bases around Kanagawa and Shizuoka to Ohi-cho, Ashigarakami-gun, Kanagawa.
1994 Jul.
Changed the company name to "Kato Hatsujo Inc."
Annual sales: 35 billion yen.
Established KHK of UK Ltd., a fully funded sales base in London
Became a center to expand business in Europe.
1995 Apr.
Introduction of stock
Listed as over-the-counter stock. Capital: 2,623,25million yen.
Established the first production base in Europe
Jointly established Piolax Ltd. with Reefa, a British resin maker in Lancashire, U.K.
Changed the company name to the present "PIOLAX, Inc."
Established the Medical Appliance Division.
1996 Jun.
Established a plant in South Korea
Established "PIOLAX Co., Ltd.", a joint venture with "SAN YUNG TRADING Co., Ltd.", a South Korean chemical product trading company.
Established Technical Center.
Consolidated Design and R&D divisions in Kariba-cho, Hodogaya-ku, Yokohama-shi. Approx 200 employees.
1998 Apr.
Listed on the second section of the Tokyo Stock Exchange
Three years after registered as over-the-counter stock.
Started operation in Fuji Plant, a new production base
Established a newest plant in Fujikawa-cho, Ihara-gun, Shizuoka. Started business with Toyota.
Established West Japan Center
Consolidated distribution bases in Hiroshima and Kyushu to Kanda-cho, Miyako-gun, Fukuoka.
1999 Apr.
Split off the medical appliance business
Piolax Medical Devices, Inc. was established.
Totsuka Kasei Co. Ltd., Hodogaya Hatsujo Co., Ltd., and S.T.K. Co., Ltd. were merged to S.T.K. Co., Ltd.
Established P.M.T. Inc.
Improved efficiency by promoting in-house production of molds for injection molding.
2000 Mar.
Constructed a new plant in U.K.
Established Piolax Ltd. near Manchester.
Obtained "ISO9001:1994" certification, quality management standard
Also won the "Excellent Company Award" from Nissan Motor Co., Ltd.
Established a new subsidiary in Thailand
Established Piolax (Thailand) Ltd. in order to reinforce business in Asia.
Reinforced U.S. bases
KHK of America Inc. founded in 1986 and Piolax Corporation founded in 1988 were merged with bases in Michigan and Georgia.
Established a new plant in Mexico
Started the operation in PIOLAX, S.A. de C.V.
2001 Mar.
Comprehensive business alliance including capital participation with Saga Tekkosho Co., Ltd.
Concluded a business cooperation agreement in accordance with the Nissan Revival Plan.
Obtained QS9000 certification, international quality standard
It allowed PIOLAX to meet the requirement of U.S. Big 3.
Established P.S.T. Inc.
Expanded press working and production of pressed metal products.
2002 Apr.
Introduced SBU system
Classified business fields into six units and introduced the Strategic Business Unit (SBU) system to improve the profit-earning capacity.
Obtained "ISO14001:1996" certification, environment management system standard
Further promoted the efforts toward an environment-conscious company.
Changed the company name of a subsidiary
Changed the company name "S.T.K. Co., Ltd". to "PIOLAX Harness Fastening Systems, Inc."
Promoted spin-off the company
PIOLAX OC Systems Co., Ltd. was spun off into a separate company for the purpose of improving the capacity for developing, manufacturing and selling open/close mechanical parts for automobiles. Also, PIOLAX Business Service Co., Ltd. was spun off to undertake accounting, personnel and administration work.
2003 Jul. Obtained "ISO9001:2000" certification, quality management system standard (Corresponding office )
Established a base in China
DONGGUAN PIOLAX Co., Ltd. was established in Guangdong, China, with investment of 51% by PIOLAX, 25% by San Lon Industrial Co., Ltd. in Taiwan, and 24% by PIOLAX of Taiwan Inc.
Sep. Celebrated the 70th anniversary of founding. Established a base in France
2004 Sep. Listed on the first section of the Tokyo Stock Exchange
2005 Aug. Established P.N.S. INC.
Oct. Merged with PIOLAX OC SYSTEMS Co., Ltd.
2006 Apr. Obtained "ISO14001:2004" certification, quality management system standard (Corresponding office )
Aug. Obtained ISO/TS16949:2002, an international automotive industry standard. (Corresponding office )
2007 Apr. P.N.S. INC merged with SANKYO HATSUJO CO., LTD.
May. The new ERP system to “visual” business is operating company wide.
Oct. PIOLAX KYUSYU was established in October, 2007.
2009 Apr. PIOLAX MEDICAL DEVICES, INC., our consolidated subsidiary obtained all of SOLUTION's stocks. Merged with SOLUTION on April 1, 2010.
Cancelled the merger agreement with KHK OF TAIWAN, INC., an equity method affiliate.
Dec. Established a new subsidiary in India.
Established a sales subsidiary on the assumption that we would establish a production base for sales expansion in the automobile market in India.
PIOLAX LTD. (U.K.) merged with PIOLAX
2010 Jul. Established PIOLAX MEXICANA S.A. de C.V. PM in Apodaca, Mexico.
2012 Jul. Established a new subsidiary in Indonesia.
Nov. Established a consolidated subsidiary as a second production base in Wuhan City Hubei, China.
2014 Sep. Moved PIOLAX CO., LTD. (South Korea) to a new plant (Incheon, South Korea)
2015 Feb. Completed a new plant dedicated to medical device manufacturing for PIOLAX MEDICAL DEVICES, INC. (Totsuka-ku, Yokohama-shi).
2016 Oct. Merged with P.S.T. INC. (short form merger)