Hangzhou Zhouju Electronic Technology Co., Ltd. – Comprehensive, End-to-End Core Capabilities Forge High-Quality Manufacturing Competitiveness
Customized Variable Frequency Motor Control System Service Provider
Zhouju Technology is a high-tech enterprise dedicated to the research of algorithms for DC motor drive products, as well as software and hardware development, PCBA manufacturing, and sales. The company currently comprises three main divisions: its headquarters in Hangzhou, the Changchun Research Institute, and the Anji Manufacturing Base.
The company boasts a world‑class R&D team, providing customers with cutting‑edge motor drive system solutions. The Anji manufacturing base covers 30 mu of land, with a factory area of 30,000 square meters, an annual production capacity of 16 million control boards, and a fully developed manufacturing system coupled with robust quality assurance capabilities.
R&D CAPABILITY
The company holds over 60 patents and software copyrights, including 30 invention patents. It was certified as a "National Key Supported High-tech Enterprise" in 2014, recognized as the "Hangzhou Enterprise High-tech R&D Center" in 2018, designated as the "Provincial High-tech Enterprise R&D Center" by the Zhejiang Provincial Department of Science and Technology in 2020, and awarded the title of "Zhejiang Provincial Enterprise Research Institute" in 2023.
National High-Tech Enterprise
National “Little Giant”Enterprise
Zhejiang Provincial Enterprise Research Institute
Zhejiang Provincial “Zhuan-Jing-Te-Xin” SMEs
Zhejiang Provincial Innovative SMEs
RESEARCH TEAM
The R&D Center comprises the Changchun Research Institute, the Hangzhou R&D Department, and the Experimental Center. It employs over 80 R&D engineers, including 5 PhD, more than 10 Masters, 3 Senior Engineers, and over 20 Senior Industry Experts.
UNIVERSITY-ENTERPRISE COOPERATION
Zhouju has not only established in-depth technical collaboration with Jilin University but also has four specially appointed professors. Guided by the philosophy of "innovation makes it easy," the R&D team possesses profound expertise in the fields of DC variable frequency driver and intelligent control systems, achieving industry-leading standards in both theoretical research and technological application.
EXPERIMENTAL CAPABILITY
01 The Testing Center is compliant with the ISO 17025 (laboratory management system) and the ISO 9001 (quality management system).
02 Based on industry standards such as Household and Similar Electrical Appliances and Electrical and Electronic Products, the company has established a comprehensive enterprise standard system covering dimensions including safety, functionality, performance, and environmental adaptability.
01 EMC comprehensive testing capability
Premium Shielded Environment
Equipped with a 96 m² national-standard Class C electromagnetic shielding chamber, offering exceptional shielding effectiveness—exceeding 70 dB for magnetic fields at 10 kHz, ≥10 0dB for plane waves across 15 MHz to 10 GHz, and >90 dB at 18 GHz—fully meeting the stringent requirements of military-grade, high-precision electronic product testing.
EMS Test System
Equipped with a full suite of immunity test systems, including: 7 kV / 3.5 k surge immunity test, 5 kV Electrical Fast Transient (EFT)/Burst immunity test, simulations of 0-120% voltage dips andinterruptions, 20 kV Electrostatic Discharge (ESD) immunity test.
EMI Test System
Utilizes a full-frequency-band test system from Rohde & Schwarz (Germany), featuring:
Frequency range: 9 kHz to 3 GHz
Maximum test power: 80 kW
Detection sensitivity: ≤ -120 dBm (compliant with CISPR 32 Class B standard)
02 RELIABILITY verification CAPABILITIES
Temperature-Humidity Cycling System
Extreme Temperature Range: -70 °C to +180 °C (±1 °C)
Humidity Range: 20 % to 98 % RH (±2 % RH)
Dual-Mode High/Low Temperature Shock System:
Rapid Temperature Transition: ≤ 10 seconds
Quick Stabilization Time: ≤ 5 minutes
vibriation testing system
Capability:Three-axis testing capabilityMaximum acceleration: 100G(980m/s²)
Maximum thrust: 1T
Wide frequency Range: 2-3500HZ
International Standard Transportation Simulation System
Compliant with ISTA 3A and ASTM D4169, featuring combined random vibration and shock testing.
Comprehensive Validation Capability
All equipment is calibrated and accredited by CNAS, enabling full simulation of product reliability under extreme environmental conditions, mechanical stresses, and transportation scenarios.
03 PRODUCT PERFORMANCE TETSING CAPABILITIES
Integrated Pump Performance Test Platform
Head Testing Range: 0–600 m (covering extreme operating conditions of deep-well pumps)
Flow Rate Testing Range: 0–50 m³/h (compliant with fire pump standards)
Power Testing Capacity: Full-load testing up to 15 kW
Precision Airflow Performance Testing System
Test Range: 150–3,000 m³/h (accuracy ≤ ±5% of full scale)
Standards Compliance: Fully compliant with GB/T 17713 for range hoods and equivalent to Annex D of IEC 60665
Testing Protocol & Special Configuration: Dedicated B-type exhaust fan test duct
50 kW Eddy Current Dynamometer System
Supports high-speed testing from 0 to 15,000 rpm
Step-load (load-step) response time: <1 second for both load application and removal
Typical Applications
Motor lifetime simulation tests (continuous operation ≥ 1,000 hours)
Temperature rise characteristic testing (ambient to 180°C)
Full-operating-condition testing for various motor types, including impact tests for power tools
MANUFACTURING CAPABILITY
Our production base is located in the Yangtze River Delta Industrial Integration Demonstration Zone in Huzhou, Zhejiang Province. It covers an area of over 30 acres (20,000+ sqm) with a building area of 30,000+ ㎡. The facility is equipped with 7 high-speed SMT lines, 13 DIP lines, and 8 assembly lines. With industry-leading process design, the manufacturing process utilizes automated production lines while implementing integrated information management platforms such as ERP, MES, and ESD. This infrastructure establishes the Superior Quality and Maximum Efficiency system for the enterprise.
Scale and Strength
Factory area
Annual production capacity of the electronic control board
ASSEMBLY LINES
DIP LINES
SMT LINES
QUALITY CONTROL CAPABILITY
The company has established a product quality-centered, staff-participated, and scientifically efficient management system—namely, Total Quality Management (TQM). It has implemented the control system covering R&D design, raw material qualification, full-process production control, customer feedback, and problem resolution to ensure end-to-end issue solving. Leveraging ERP and LEAN MES business processes, it enables full product lifecycle management, FIFO (First-In-First-Out) inventory control, product traceability, process monitoring, as well as visual management and information-driven operations.
TECHNOLOGICAL
INNOVATION
SCIENTIFIC
MANAGEMENT
SATISFY
CUSTOMERS
CONTINUOUS
IMPROVEMENT
ISO 9001
ISO 14001
ISO 27001
GB/T29490
PINZI BIAO
ISO 14001
Engineering Capabilities
DIGITALIZATION IN MANUFACTURING
Lean Management System Platform - LEAN CLOUD
We focus on LEAN management of the five key production elements (Man, Machine, Material, Method, Environment) on the manufacturing site.This system integrates over a dozen LEAN management applications, including employee rationalization proposals, 6S management, and Total Productive Maintenance.
Intelligent Process Management Platform - E-SOP
The system with the digital and intelligent management of production processes will effectively improve process management efficiency, Optimize production workflows, and enhance product quality.
MES application in Manufacturing
This system is responsible for operational management on the manufacturing floor, bridging the "information gap" between production plans and actual manufacturing, in order to enable visual, digitalized, and precision management of the production process
Intelligent Warehouse Management System - WMS
This software system optimizes and manages daily warehouse operations. Through digital means, it provides precision management and control over processes such as warehouse entry, storage, picking, shipping, and inventory counting. It aims to enhance warehouse operational efficiency, reduce operating costs, and improve inventory accuracy.
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Email:zj@sptchina.cn
Headquarters:Building 5, Loftpower Haibang Park, 1008 Xiangwang Street, Yuhang District, Hangzhou,Zhejiang 311121, China
Hangzhou Zhouju Electronic Technology Co., Ltd. Website Development
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