JOHNAN SIAM CORPORATION LIMITED:

Your Trusted Japanese Quality EMS Partner in Thailand

JOHNAN SIAM CORPORATION LIMITED is an EMS company founded in 2008 in Sriracha, Chonburi, Thailand. It provides board mounting, assembly and inspection through to repair and rework at a single site, covering high-mix low-volume to mass production. With 264 employees (as of March 2024), it joined the JOHNAN CORPORATION group in 2019 and holds IATF16949, ISO9001:2015 and ISO14001:2015 certifications, along with Green Industry Level 3 recognition.

Established in : 2008

Location : Pinthong Industrial Estate 1 789/108 Moo.1, Nongkham, Sriracha, Chonburi, 20230, Thailand

Access Map

Our Business Contents :

JOHNAN SIAM specializes in providing comprehensive EMS (Electronic Manufacturing Service) solutions. Our expertise includes board mounting of electronic components, electronic equipment assembly and inspection services, and the repair and rework of equipment and circuit boards. We offer a full range of services, including SMT and PCB L manufacturing capabilities, tailored for automotive, industrial, and consumer electronics applications.

Number of employees :

264 As of March 31, 2024 (including contract employees).

Certification :

We uphold the highest standards of quality and environmental management. Our certifications include:

ISO9001: obtained in 2015
ISO14001: obtained in 2015
Green Industry (Level 3): obtained in 2022
IATF 16949: obtained in 2023.
These certifications underscore our commitment to excellence and reliability.

Our Leadership Team

Takashi
KOBAYASHI

Managing Director

Rintaro
KUREBAYASHI

Director

Shinichi
ITO

Director

Tomoji
KOUDA

Director

Satoshi
YAMASHITA

Director

2007

CELCO (THAILAND) CO.,LTD registrations.

2008

Launch of printed circuit board assembly service (ISO9001: acquired in 2015).

2009

Launch of PCBA services for Plasma TV.

2012

Launch of PCBA services for motors, and home appliances Commencement of PCBA services for air conditioners, ISO14001: Obtained 2015 certification.

2016

Launch of business inspection services.

2019

JOHNAN Corporation acquired all shares of CELCO (THAILAND) CO., LTD.

2019

Our name has been changed “JOHNAN SIAM CORPORATION LIMITED”.

2022

Green Industry (Level 3) Certified.

2023

Obtained IATF 16949 certification.

JOHNAN Corporation

About Our Parent Company: JOHNAN Corporation

Foundation : October 1962

Establishment : August, 1968

Capital : 95 million JPY

Representative : President & CEO　Mitsuyo Yamamoto

Head office : 1-28, Narute Okubo-cho, Uji-shi, Kyoto, Japan

Number of employees (JOHNAN Co., Ltd.):
JOHNAN Co., Ltd.: 282 staffs

Total of JOHNAN Group: 733 staffs
※ As of May 2024 (as of May 2024, including part-time employees and contract employees)

Key Business Contents:

・Start-up new business support

・Prototype/commercialization support

・Manufacturing support (including manufacturing support equipment/automation services, equipment parts processing, contract manufacturing, manufacturing human resources support)

・Repair/maintenance support

As part of the JOHNAN Group, JOHNAN SIAM leverages this extensive expertise and global network to provide superior manufacturing solutions in Thailand.