About SHZK
Your trusted Chinese manufacturer of professional Variable Frequency Drives for global industrial applications
10+ Years of VFD Manufacturing Excellence
SHZK is a professional Variable Frequency Drive manufacturer located in Yueqing, Zhejiang Province, China — the heart of China’s electrical equipment industry. With over a decade of specialized experience, we design, manufacture, and deliver high-quality VFDs to industrial customers worldwide.
Our WXQ300 Series covers the complete power range from 0.75kW to 720kW across four distinct product lines, serving applications from small workshop motors to heavy industrial drives in manufacturing, water treatment, mining, HVAC, and renewable energy.
SHiZK Technology Co., Ltd. — Professional VFD & Drive Manufacturer Based in Shenzhen, China
Our Modern Manufacturing Facility — 10,000+ sqm Production Space
Manufacturing Capability
State-of-the-art production facilities with rigorous quality control at every stage
R&D Department
Dedicated engineering team specializing in power electronics, motor control algorithms, and thermal management design.
SMT Production Line
Automated SMT assembly lines for PCB production ensuring consistent quality and high-volume manufacturing capability.
Quality Testing Lab
100% full-load aging test on every unit. Comprehensive QC includes insulation resistance, hi-pot, and functional testing.
Warehousing & Logistics
Extensive inventory of standard models for immediate dispatch. Efficient packaging for safe international shipping.
Advanced SMT Production Lines — Automated Manufacturing for Consistent Quality
Skilled Assembly Line — Every Unit Assembled with Precision and Care
Automated Assembly Line — High-Efficiency Production Process
Quality Assurance
Every VFD undergoes rigorous testing to ensure reliability in the most demanding industrial environments
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Premium IGBT Power Module
We use high-quality IGBT modules with SVPWM control technology for stable, efficient power conversion and extended service life.
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6-Fold Protection System
Every drive features comprehensive protection: over-current, over-voltage, under-voltage, over-heat, overload, and short-circuit protection.
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UL94 V-0 Flame-Retardant Housing
Enclosures meet UL94 V-0 flame retardancy rating — the highest level of protection against fire hazards in electrical equipment.
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CE / RoHS / LVD Certified
All products comply with European CE marking, RoHS environmental directive, and Low Voltage Directive for international market access.
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100% Full-Load Aging Test
Every single unit undergoes full-load burn-in testing before shipment to guarantee field reliability and performance consistency.
Rigorous Quality Testing — 100% Factory Inspection Before Shipment
Automated Optical Inspection (AOI) — Zero-Defect Manufacturing Standard
Why Partner With Us
More than a supplier — we’re your reliable manufacturing partner for long-term success
Factory Direct Pricing
Source directly from the manufacturer with no middlemen. Competitive pricing with transparent MOQ of just 1 piece.
Full Technical Support
Complete documentation package: wiring diagrams, parameter manuals, application guides, and responsive engineering support.
Fast Delivery
Standard models ship within 3-5 days from stock. Custom OEM/ODM orders fulfilled within 7-15 business days.
Custom & OEM
Flexible customization options including logo printing, custom packaging, special voltage configurations, and firmware adjustments.
Shipping & Logistics
Export-grade packaging and large inventory ensure fast, safe delivery to customers worldwide
Export-Grade Packaging — Wooden Crates for Safe International Shipping
Large Inventory — Ready Stock for Fast Delivery
Trade Shows & Exhibitions
Connecting with partners and customers at trade shows around the world
Exhibiting at International Electronics Fair — Connecting with Global Partners
Our Factory & Products
Take a closer look at our manufacturing facility and product range
