Quality Control
- Quality control from incoming materials to final delivery.
- ISO 9001-certified GFCI and switch manufacturing for export.
- Model-specific technical data and certification records.
3GRACE / ELECTRICAL SAFETY
Protection starts where current flows.
GFCI receptacles, USB charging outlets and electrical wiring devices developed for distribution and OEM programs.
PRODUCT COLLECTION
Product Category
Explore the range, compare configurations and find the right model for your requirements.
01
GFCI Outlet
GFCI outlets and combination GFCI / USB configurations.
Explore category02
USB Outlet
Slim and regular-depth USB charging outlets, including USB-A, USB-C and Power Delivery configurations.
Explore category03
Regular Outlet
Decora, standard and recessed duplex receptacle configurations.
Explore category04
Switch
Toggle, rocker and combination switches together with compatible-load dimmer configurations.
Explore category05
Wall Plate
Screwless and screw-mount wall plates in Decora, toggle and combination formats.
Explore category06
Electrical Outlet Box
PVC electrical outlet boxes in single, multi-gang and round configurations.
Explore category07
Floor Outlet
Floor-mounted power for your project.
Explore categoryPRODUCT FINDER
Have a specification in mind?
Find models by rating, category and features.
GFCI TECHNOLOGY
Designed to sense, detect, trip and verify.
GFCI protection depends on a connected chain of sensing, detection, interruption and self-test monitoring. We connect that explanation to exact models and evidence.
Explore the technology- 01
Sense
Monitor current balance.
- 02
Detect
Identify a ground fault.
- 03
Trip
Interrupt the circuit.
- 04
Verify
Support self-test monitoring.
Zhejiang Shengyu Electrical Co., Ltd. was founded in 2001 in Lishui, Zhejiang. We develop and manufacture GFCIs, USB outlets, receptacles, switches, wall plates and electrical accessories for customers across North and South American markets.
Product quality and customer experience guide our control system from raw-material procurement through finished-product delivery. Since developing an auto-monitoring GFCI in 2006 and adding regular self-test functionality in 2015, Shengyu has continued to advance intelligent electrical protection and customer support.
Established
Employees
Patents
Company Area
Our Certifications
Explore our product certifications and quality management credentials.
CERTIFICATION EVIDENCE
Quality you can verify.
UL and ETL certification records cover specific product families, alongside ISO 9001 quality management certification. Explore certificates, applicable models and official verification links.
E473989 · Ground-fault Circuit Interrupters E243553 · Receptacles and USB Receptacles E327438 · General-use Snap Switches E247613 · Cover Plates for Flush-mounted Wiring Devices
Open certification center Our Advantage
From product development to customer support, we focus on the details that matter to your business.
Factory & Team
- Electrical product development and manufacturing since 2001.
- 200+ employees. A company site of approximately 20,000 m².
- Expertise in GFCIs, USB charging and electrical wiring devices.
Professional Service
- Technical support from product selection to after-sales service.
- OEM/ODM support shaped around your product requirements.
- Serving customers across North and South America.
Special Services
OEM/ODM
Share your application, target market and product requirements with our team. We can discuss the right product series and OEM/ODM options for your project, with model specifications and the scope of customization agreed before the next step.
Private Label Design
Bring your brand identity into your product program. Discuss logo presentation, product labeling and artwork requirements with our team. The design details and scope can be agreed around your selected products and project needs.
Technical Support
Stay in touch with our team from product selection through after-sales support. Share your model, application and questions so we can help you review the available information and discuss the next steps for your requirements.
GFCI KNOWLEDGE
Answers built for verification.
PRODUCT CARE
Self-Test GFCI: What the Feature Does
Automatic monitoring and the user-operated TEST button serve different purposes. Know what to check in the instructions for your exact model.CERTIFICATION GUIDE
How to Check a Product Certification Record
A useful certification check connects the exact model, manufacturer, file or report number and applicable product scope.PROJECT PLANNING
What to Include in an Electrical Product Inquiry
A clear first inquiry helps the team compare the right configurations and identify the documents your project needs.PRODUCT SELECTION SUPPORT