Complex Manufacturing.
No Surprises
Orchestrating custom manufacturing programs for industrial OEMs.
Your Partner for Custom Manufacturing
We bring together the right manufacturing capabilities, quality oversight, and supply chain expertise to deliver reliable results-on time, every time.
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Built on Relationships.
Focused on Your Success.
Since 1987, S.O. Sales has helped industrial OEMs bring innovative products to market through carefully managed custom manufacturing programs.
Headquartered outside Boston, Massachusetts, supporting local, nationwide, and global operations.

Solenoids
- DC Solenoids – Open Frame
- DC Solenoids – Enclosed
- Self-Latching Solenoids
- Tubular Solenoids
- Push-Pull Solenoids
Valves
Custom-built valves for the fire suppression industry are suited for petrochemical, gas, and power station applications.
Cast Metals
Die casting is best suited for small to medium size parts with higher volume requirements. It uses 100% recyclable materials.
Forging
Forging is best suited to applications where tensile strength, ductility, impact, fracture toughness, and material fatigue are important.
Finishes
- Powder Coat
- Paint
- E-Coat
- Black Anodize
- Black Oxide
- Polish
- Buff
- Flat
- Shine
- Anodize
- Silk Screen
- Electroplate
- Chromate
Machining
Precision machining is paramount in industries demanding tight tolerances. Sourcing-Opportunities Inc. has been a top-tier supplier for over 30 years.
Transformers
Transformers are built to meet agency standards, including UL, CSA, IEC-65, BS-415, SEMKO, and VDE. Typical applications include:
- Power Supplies
- Telecom
- LAN
- Lighting







