Sumitomo Electric Interconnect Products, INC.
At a glance
Employees100-499
In business sinceNot reported
HeadquartersSan Marcos, CA
SAM.gov UEIMXS9XJGRRLS3
Sumitomo Electric Interconnect Products Inc. manufactures heat shrink products, including heat shrink tubing, solder termination sleeves, crimp devices, and identification sleeves and cable markers produced through their SumiMark, Sumitag, and Sumilabel systems. The company serves the aerospace, military, automotive, industrial, commercial, medical, rail/transit, energy, and heavy equipment industries. Production takes place in the United States.
Summarized from the company’s own website
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Sumitomo Electric Interconnect Products, INC. | San Marcos | CA | 100–499 | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.

