Chonburi

JOHNAN SIAM CORPORATION LIMITED

JOHNAN SIAM CORPORATION LIMITED operates an EMS (Electronic Manufacturing Services) business in Thailand. Our services span component procurement, part processing, circuit board installation, product assembly, quality inspection, to repairs, all offered through a One-Stop Solution. Quality of products, certified by IATF16949, ISO9001/14001, ensuring quality on par with Japan. Awarded the Bronze in the Thailand 5S Award 2023.