Ymsc, INC.
Doing business as Prime Supply 1
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersRiverside, CA
SAM.gov UEIGFHMPWJ7W883
CAGE code84AC3
Incorporated inCA
- landscaping
- construction
- landscape fabric
- landscape edging
- landscape materials
- biobarriers
- geomembranes
- liners
- geocells
- geogrids
- jute netting
- erosion control
Named on the company’s own website, read JUL 29, 2026
Supplier designations
For Profit OrganizationMinority Owned BusinessSubchapter S CorporationWoman Owned BusinessWoman Owned Small Business
Self-certified by the company in its SAM.gov registration
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Ymsc, INC. | Riverside | CA | — | 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.

