Business activity profile
Keystone Security Inc is listed on US BIZ as a Alarm Signal Systems business serving San Leandro, CA. This profile emphasizes practical discovery: what the company is, where it is, and how the listing can be maintained.
Commerce markers
- Business category: Alarm Signal Systems.
- Local operating area: San Leandro, CA 94579.
- Owners can keep phone, website, and classification details fresh.
Business Details
Business name
Keystone Security Inc
Contact
Address
111 Santa Teresa San Leandro, CA 94579
Phone
Website
Category
Alarm Signal Systems
SIC
5999
NAICS
453998
Location type
Single Location
Market
B2C
Founded
1969
Employees
1 to 4
Annual revenue
$100.000 to $499.999