About Us
JOHNAN SIAM CORPORATION LIMITED
JOHNAN SIAM CORPORATION LIMITED, a group company of JOHNAN CORPORATION, contributes to solving various problems in manufacturing based on the Japanese manufacturing quality cultivated for many years.
Read moreSERVICES
We provide EMS (Electronic Manufacturing Service) services for consumer electronics, White goods, car models, and industrial equipment
We provide high-resolution inspection services (dimensional and visual) for electronic and automotive components.
After analyzing and identifying the causes of malfunctions and failures of devices and equipment that do not have specifications and schematics, we can repair or replace parts and put them back into use.
Based on the quality of Japanese manufacturing, We will contribute to industrial growth and social implementation in Thailand and abroad.
JOHNAN SIAM CORPORATION LIMITED provides EMS services for electronic components and devices, and board repair services for equipment, etc. in Sriracha Pinthong 1 Industrial Estate, Chonburi Province. We provide highly reliable services with a focus on QCD.
Obtained IATF16949 certification and Green Industry (Level 3) certification
Poor quality
Lack of necessary equipment
Ack of manufacturing know-how
NEWS & EVENTS

March 26, 2025
Our Website Has Been Updated
We are pleased to announce the renewal of the official website for JOHNAN SIAM CORPORATION LIMITED. To provide you with ...

November 9, 2023
Bronze Award in “Thailand 5S Award 2023”
Bronze Award in "Thailand 5S Award 2023" sponsored by Thai-Japan Association for the Promotion of Economy, Trade and Technology ...