Saitama × Dongguan, China. From two sites, one team, to the world.
Established 2015. In-house 5 stages — injection, painting,
assembly, packaging, and warehouse — all under one roof.
In 2015, we founded our self-operated factory in Dongguan, Guangdong.
A decade focused on Japanese clients, we have honed our OEM craft.
In October 2025, we established our Japan entity “TOEI SOSAN GROUP Co., Ltd.” in Koshigaya, Saitama.
As the liaison point for business expansion and Japanese client relations, we now operate as a two-site organization.
One question has stayed with us —
“Can China’s powerful manufacturing capacity, paired with Japanese quality standards, reach global consumers?”
We chose to stand between these two worlds.
Saitama HQ plans and sells; Dongguan factory executes the 5 in-house stages.
Across 11 registered business areas, we deliver trusted quality to the world.
Two directors are personally involved in every project.
US Master’s in UI&UX Design · 7 years of US trade experience
Japan OEM sales · QC · project management
