About Us

 

 

 

 

 

Our production base is located at No. 99, Group 1, Chongwangmiao Community, Taiping Subdistrict, Pulandian District, Dalian, Liaoning Province. An integrated R&D, manufacturing and quality-control system ensures stable, high-quality output for every order.

SITE AREA	About 20,000 m²
BUILDING AREA	18,000 m²
WORKFORCE	200+ people · 16 senior engineers · 7 intermediate engineers · 3 Chief Quality Officers · 7 internal auditors · 9 certified electricians
EQUIPMENT	300+ sets of advanced production and testing facilities

 

 

Three core product series cover instrument transformers up to 35 kV and neutral-point protection up to 110 kV / 220 kV, supported by in-house instrumentation:

INSTRUMENT TRANSFORMERS – JLSZV combined instrument transformers – Indoor CT & VT, 12–40.5 kV – FDGE discharge coils (≤35 kV) – LMZJ / BH-0.66 low-voltage CT – LMZ1D–LMZ5D State Grid metering CT – LR(B) bushing current transformers

ELECTRICAL EQUIPMENT – CJ6A / CJ6B disconnector mechanisms – AY-ZGXH neutral grounding arc-suppression devices – AY-ZZD neutral grounding resistor cabinets – BZFZ 110/220 kV complete protection devices – AY-XDW(N)-I/II terminal boxes – ZJKK-66 neutral grounding reactors

INSTRUMENTATION – BTD transformer core/clamping grounding current monitors – JCQ-C1 arrester monitors – JSY-8S discharge counters – XMT / XMZ digital temperature indicators – BWY / BWR oil-level & winding temperature controllers

 

 

PRODUCT	TYPICAL APPLICATION
Combined instrument transformers (JLSZV)	Outdoor HV metering devices for energy metering, protective relaying, line-loss and substation assessment on 10 kV power lines.
Indoor CT & VT, 12–40.5 kV	Switchgear of 50/60 Hz systems for voltage/current measurement, metering and relay protection.
Discharge coils (FDGE)	Parallel with HV capacitor banks up to 35 kV; discharge residual voltage to below 50 V within 5 seconds.
Low-voltage CT (LMZJ / BH-0.66)	Measurement, monitoring and protection in switchgear at 0.66 kV and below; busbar or base mounting.
Bushing CT (LR(B))	Inside oil-immersed transformers or HV circuit breakers of 35 kV and above; metering, protection and zero-sequence protection.
BZFZ neutral-point complete devices	110 kV / 220 kV substations; gap-electrode discharge protection for ungrounded transformer neutrals.
Arc-suppression coils (AY-ZGXH) & reactors (ZJKK-66)	10–66 kV systems; inductive current compensation for single-phase ground faults.
Grounding resistor cabinets (AY-ZZD)	Transformer neutral in 6–35 kV cable networks; limit overvoltage and improve network safety.
CJ6A / CJ6B electric mechanisms	Reliable motorized operation for outdoor disconnectors and earthing switches up to 550 kV; maintenance-free.
Core monitors & temperature controllers	Operation monitoring and cooling control on power transformers up to 500 kV; outdoor-capable protection.

 

 

Certified by leading international management systems and recognized as a national high-tech, specialized, innovative and green manufacturer, with 20+ utility-model patents, 2 invention patent applications and complete product type-test reports.

ISO 9001 Quality Management	ISO 14001 Environmental Management	ISO 45001 Occupational Health & Safety	ISO 50001 Energy Management
High-tech Enterprise National Recognition	S.R.D.I. SME Specialized, Refined, Innovative	Sci-Tech SME Technology Certified	Innovative SME Innovation Certified
Green Factory Low-Carbon Manufacturing	AAA Credit Rating Eight AAA Credit Titles	20+ Patents Utility Models & Inventions	Digitalized Enterprise ERP Traceability System

Further honors: green supply-chain, carbon-footprint and carbon-emission certifications; China Energy-Saving & Environmental-Protection Product; Carbon-Neutral Demonstration Unit; Excellent Instrument-Transformer Brand and Excellent Supplier awards; Dalian Sci-Tech / Innovative SME and Environmental Positive Lists; software copyright for our ERP-based digital manufacturing and traceability system.

 

 

 MACHINING & SHEET-METAL WORKING

– Multi-function busbar processing machines (cutting / punching / bending)

– VMC-T6 high-speed drilling-tapping center, turret & radial drilling machines

– 3,000 W / 6,000 W fiber laser cutting machines for CNC blanking

– CNC press brakes, electric plate rolling machine, thread roller & band saw

– KBK overhead cranes, hoists and variable-frequency screw air compressors

 

 INSTRUMENT-TRANSFORMER MANUFACTURING

– VRC-150 epoxy vacuum casting equipment & static-mixing casting line

– Precision epoxy potting machine for low-voltage current transformers

– Curing / drying ovens, hot-air ovens and constant-temperature furnaces

– Full range of CNC winding machines for voltage, current, toroidal & R-core coils

– Automatic insulation taping, coil banding, dispensing & laser marking units

 

 ELECTRICAL & INSTRUMENT ASSEMBLY

– Reflow soldering machine for SMT PCB assembly

– Coalescing-separation oil filter and laser marking machine

– Low-temperature constant-temperature baths as temperature-standard sources

– Energy meters for energized meter-replacement simulation testing

 

 NEUTRAL-POINT & RESISTOR-CABINET LINES

– Fully-automatic computer wire stripping machine and wire-numbering machine

– Large-character handheld inkjet coder

– Arrester online-monitor calibration instrument and metal alloy analyzer

– Energization test console

 

 TESTING & INSPECTION

– NEPRI-6290 automatic transformer comprehensive performance test system (no-load/load, partial discharge, ratio, DC resistance, insulation)

– Power-frequency withstand-voltage test unit and 300 kV DC HV generator

– Power-quality analyzer, multi-function calibrator, AC/DC standard sources

– All instruments periodically calibrated; certificates, contracts & invoices on file

 

 

Our products sell well across China - applied in batches on key State Grid and Yunnan Power Grid projects - and are exported to 23 countries, with growing presence across Southeast Asia and South America.

USA	South Korea	Vietnam	Philippines
Uzbekistan	Australia	Southeast Asia	South America

 

KEY PROJECTS & PARTNERS	ACHIEVEMENT
Saudi State Grid - HV Mobile Substation	Custom vehicle-mounted grounding resistor cabinets; one-time grid connection and energization of five sites.
Red Mountain Data Center, USA	High-quality customized resistor cabinets supplied for the project.
Xinjiang Zhongtai Special Electric Equipment	Recognized as "2025 Excellent Supplier".
Vision Energy	Letters of recognition for Guiping Phase I, Alxa and Bayannur large energy-storage projects.
Siemens Energy (Hangzhou) · Shandong Taikai · TBEA	Strategic supply and partner recognition, including the Inner Mongolia Dengkou energy-storage project.
Jiangsu Huapeng Group	Long-term strategic cooperation.
2026 Korea Smart Grid Expo, Seoul	International showcase of products and technologies.

 

2025 SALES CONTRACT VALUE: RMB 140 MILLION
Up 14.2% year-on-year - steady growth since output first surpassed RMB 100 million in 2023.

 

 

SERVICE TENET "Customer satisfaction is our sole goal."

SERVICE COMMITMENT "High-quality products and first-class service."

 

 PRE-SALES & IN-SALES SERVICE

01 Technical service - full review of equipment, model and parameter requirements before signing; tailored design with iterative technical disclosure until you are satisfied.

02 Design liaison - complete, accurate materials and drawings within 7 days of contract signing; active coordination with design and construction parties.

03 Collaborative supervision & inspection - full cooperation with your factory inspection and supervision, including convenience for stationed personnel.

04 Delivery-time guarantee - production to contract and national standards; on-time delivery with corresponding compensation liability for delays.

05 Flexible manufacturing - prompt communication and implementation of agreed requirement changes.

 

 AFTER-SALES SERVICE

01 On-site support - full-time engineers assist with unpacking, acceptance, installation, commissioning and handover testing.

02 Free training - pre-installation technical training and guidance on request.

03 Warranty - 24-month warranty after final acceptance; engineers arrive on site within 24 hours; defective parts corrected or replaced free of charge.

04 Rapid response - personnel dispatch and spare parts prepared according to the specifics of each service request.

05 Field readiness - dedicated after-sales service vehicles and complete on-site tools; every reasonable requirement is fully met.