Company Profile




7F, Yokohama Hanasaki Building, 6-145 Hanasakicho Nishi-ku, Yokohama-shi, Kanagawa-ken 220-0022, Japan

Business Overview

-A major manufacturer of precision automotive springs and industrial-use fasteners. Automotive products account for 95% of sales.

-The Company and Saga Tekkosho Co., Ltd. became each other’s major shareholders, forming a business alliance in the automotive fastener sector.

-Has the world’s largest market share of air-dampers that smoothly open/close glove compartments and Japan’s largest market share of the lock that securely fastens both sides of the compartments, according to the Company’s own research.


Financial Highlight

-FY ending Mar. 2023, consolidated sales JPY 58,422 million (5.9% increase), operating income JPY 3,949 million (24.3% increase), ordinary income JPY 4,868 million (15.7% increase), net profit JPY 3,375 million (20.1% increase).


-Listed on the Prime Market of the Tokyo Stock Exchange. (As of Mar. 31, 2023)
Name or Company Name Investment Ratio (%)
Saga Tekkohsho Co., Ltd. 17.11
The Master Trust Bank of Japan, Ltd. (Trust Account) 12.73
Custody Bank of Japan, Ltd. (Trust Account) 7.37
Individual shareholder 3.11
Customers stockholding 2.50
Hatsuki LLC 1.86
Mizuho Bank, Ltd.
Total 52.25


-Button Clip
-Trim clips
-2-piece clips
-Piping clips
-Screw grommets
-Garnish clips

Harness Parts
-Cable Tie

Clamp Parts
-Plate clamps
-Holderless clamp

Powertrain System Parts
-Compression springs
-Tension Torsion Spring
-Wire form
-Snap rings
-Disc springs & Flat springs
-Piston Return
-Drive system resin parts

Fuel System Parts
-Fuel cut off valve
-Valve for filler neck
-Fuel check valve
-Resin molded part for module
-Resin tube ASSY part
-Small welded part made of HDPE
-Small mesh filter
-Quick connector

Open-close Mechanisms Parts
-Air dampers
-Cushion with spring
-Torque hinge

Precision Parts
-Support-Head Rest
-Cover-Mirror Harn


Sep. 1939 Established as Kato Hatsujo Inc.
Jun. 1957 Established the Yokohama Plant in Hodogaya, Yokohama
Oct. 1964 Established the Totsuka Plant in Totsuka, Yokohama
Oct. 1970 Established the Mooka Plant in the First Industrial Park in Maoka, Tochigi
Oct. 1973 Established K.P. Products Inc. in Hodogaya, Yokohama, as a joint venture with Peterson American Corporation, a spring manufacturer in the U.S. Started production of automatic transmission rings.
May, 1995 Increased capital of (USA) Piolax Corporation to USD 6 million
Aug. 1995 Established a subsidiary, Piolax Limited in Lancashire, England
Oct. 1995 Changed the name of the company to Piolax Corporation
Jun. 1996 Established Piolax Corporation in Seoul, Korea with Samyung Trading Co., Ltd. in Korea (moved to Icheon-si in April 1997)
Sep. 1996 (Korea) Piolax Corporation increased capital by 0.3 billion won to 0.4 billion won
Dec. 1996 (Korea) Piolax Corporation increased capital by 1.5 billion won to 1.9 billion won
May, 1997 (USA) Piolax Corporation obtained QS9000
Jun. 1997 (England) Piolax Limited increased capital to 33 million pounds
Feb. 1998 (Korea) Piolax Corporation increased capital by 1 billion won to 2.9 billion won
Oct. 1998 Established the Fuji Plant in Anbara, Shizuoka. Moved the Totsuka Kogyo operation to and also started the Fuji Branch in the same location (added second plant in March 2000)
Apr. 1999 Established STK Inc. by combining three subsidiaries, Totsuka Kasei, Hodogaya Hatsujo and STK
Jun. 1999 (England) Piolax Limited increased capital to 4.05 million pounds
Oct. 1999 Established PMT Inc. in Hodogaya, Yokohama
Jan. 2000 Piolax merged K.P. Products Inc.
Mar. 2000 Piolax Limited formed New Plant and transfer in Lancashire, England
Jul. 2000 Obtained ISO9001, an international quality assurance certification.
Apr. 2002 Increased the capital of Piolax Corporation located in the USA to 1,201 million US dollars.
May 2002 S.T.K Co., Ltd. changed its name to Piolax HFS, Ltd.
Oct. 2002 Established Piolax OC Systems in Hodogaya-ku, Yokohama City, Kanagawa Pref.
Jan. 2003 Reorganized KHK of UK Ltd. as a sales company by adding a sales function, and changing the company name to Piolax Ltd.
Jan. 2003 Reorganized the existing Piolax Ltd into a manufacturing company, changing the company name to Piolax Manufacturing Ltd.
Jan. 2003 Expanded the capital of Piolax (Thailand) Ltd. in Thailand to 250 million Baht.
May, 2003 Increased the capital of Piolax (Thailand) Ltd. to 300 million Baht.
Aug. 2003 Established Dongguan Piolax in Guangdong prov., China together with two Taiwanese companies.
Sep. 2003 Established a representative office in France.
Sep. 2004 Listed on the First Section of the Tokyo Stock Exchange.
Aug. 2005 Established PNS in Hodogaya-ku, Yokohama City, Kanagawa Prefecture.
Aug. 2005 Increased it share capital in Dongguan Piolax Co., Ltd. to US$3.6 million.
Oct. 2005 Merged Piolax OC Systems into Piolax.
Jan. 2007 The Company acquired all the shares in Sankyo Hatsujo Co., Ltd., which was its affiliate under the equity method.
Mar. 2007 Dongguan Piolax Co., Ltd. increased its capital to 7.1 million US dollars.
Apr. 2007 N.S Co., Ltd. absorbed Sankyo Hatsujo Co., Ltd.
May, 2007 Dongguan Piolax Co., Ltd. built a new plant in Dongguan, Guangdong Province, China, and transferred its headquarters there.
Oct. 2007 Established Piolax Kyusyu Co., Ltd. in Iizuka City, Fukuoka Prefecture.
Apr. 2009 Canceled the merger agreement with San Long Industrial Co., Ltd. in Taiwan.
Apr. 2009 Increased the capital of Dongguan Piolax Co., Ltd. in China to 19.10 million US dollars.
Dec. 2009 Established Piolax India Private Ltd. in Chennai, India.
Dec. 2009 Piolax Ltd. (U.K.) merged with Piolax Manufacturing Ltd. (U.K.)
Jul. 2010 Established Piolax Mexicana, S.A. de C.V. in Apodaca, Mexico
Jul. 2012 Established PT. Piolax Indonesia in West Java, Indonesia.
Aug. 2012 Established Wuhan Piolax Co., Ltd. in Hubei Province, China, through a joint-investment project with Dongguan Piolax Co., Ltd.
Sep. 2014 Piolax Co., Ltd. in Korea has established a new production and development base in the Incheon Free Economic Zone, and moved to the location.
Oct. 2016 Based on a short-form merger, absorbed the operations of Psteam Co., Ltd.
Jan. 2019 Established Shanghai Piolax Co., Ltd. in Shanghai.
Apr. 2022 Relocated the home office from Yokohama’s Hodogaya Ward to Nishi Ward.
Apr. 2022 Moved from the First Section of the Tokyo Stock Exchange to the Prime Market.

Supplemental Information 1