Jiaxing Sanjie Electrical company profile cover

Jiaxing Sanjie Electrical Co., Ltd.

Company Profile

Discover Sanjie

About Us

Jiaxing Sanjie Electrical Co., Ltd.

Founded in 2017 with registered capital of RMB 10 million, we specialize in R&D and manufacturing of heater modules, PTC electric heaters, and wire harnesses. We mainly serve the heating appliance industry, guided by the core values of “quality focus, technology innovation, and dedicated service,” delivering safer and more practical products.

Putting customer needs first, we continue to innovate while expanding in heating appliances. We supply quality products to well-known brands, earn trust across the industry, and build a strong reputation in the heater sector.

Jiaxing Sanjie Electrical facility

By 2020: 8,000 m² production area, automated lines, constant-temperature lab, automatic full-inspection lines, annual capacity up to 15 million sets.

Our Goal: Become the most trusted core supplier in the heating appliance industry.

Our Philosophy: “Integrity first, quality foremost, wholehearted service.” With strong technical capability, we ensure products that are safe and reliable.

Our Promise: No shipment without full inspection. Strict production to national standards.

Products

Bathroom Heater · Fan Heater · Pet Room

Live (energized) PTC heaters

For bathroom heaters, fan heaters, dryers, and similar products

Air Conditioner · Robot Vacuum · Clothes Dryer

Insulated PTC heaters

For air conditioners, electric clothes dryers, robot vacuums, and similar products

Clients

Midea AUPU AUX OPPLE Pak Haier NVC DELIXI YUETU

Certificates

Quality management system certificate
Quality Management System
High-tech enterprise
High-Tech Enterprise
Technology SME
Technology SME
REACH SVHC
REACH SVHC
RoHS
RoHS
CQC
CQC

Patents

Utility model patent 1 Utility model patent 2 Utility model patent 3 Utility model patent 4 Utility model patent 5 Utility model patent 6 Utility model patent 7 Utility model patent 8

Production Workshop

Live PTC Production Line
Automatic stacking line

Automatic Stacking Line

Automation gradually replaces manual work for gluing and stacking, cutting labor cost, raising efficiency, and improving quality.

Tunnel furnace

Tunnel Furnace

High-temperature constant tunnel furnaces improve quality, reliability, and production efficiency.

Wire processing line

Wire Processing Line

To reduce customer process steps, we provide wire processing and solve harness machining needs.

Aluminum strip line

Aluminum Strip Line

In-house aluminum strip production shortens lead time and improves product quality.

Insulated PTC Production Line
Automatic glue & stacking machine

Auto Glue & Stacking

More even glue, lower power variance, better consistency. Higher efficiency and stability than manual work, with lower cost and stronger competitiveness.

Automatic die threading machine

Auto Die Threading

Precise length positioning with less manual work, ensuring consistency, higher efficiency, and better yield.

Tube pressing machine

Tube Pressing Machine

Pressure equipment with dedicated molds delivers higher precision, stability, efficiency, and quality.

Assembly line

Assembly Line

More automation raises efficiency and quality, lowers cost and labor use, and improves production safety.

Test Equipment

PTC Full Inspection Line PTC full inspection line
AC Tube Full Inspection Air-conditioner tube full inspection line
Voltage Regulator Voltage regulator
Temp. & Humidity Chamber Constant temperature and humidity chamber
Life Test Bench Life test bench
High-Temp Chamber High temperature chamber
Grinding Machine Grinding machine
Section Analyzer Section analyzer
Temperature Tester Temperature tester
Smart VFD Power Supply Intelligent variable frequency power supply

Facilities

Laboratory

Laboratory

Test and verify product performance; provide data for new product R&D and for products entering mass production.

Finished goods warehouse

Finished Goods Warehouse

Customer-based product classification to avoid mis-shipment and improve warehouse throughput.

Sample room

Sample Room

Customer sealed samples stored for traceability and product testing support.

Process Flow

Process flow from aluminum strip processing to finished packaging
  1. Aluminum strip
  2. Heat-sink assembly
  3. Glue coating
  4. Auto stacking
  5. Fixturing
  6. Tunnel curing
  7. Performance test
  8. Marking
  9. Harness prep
  10. Terminal crimping
  11. Harness assembly
  12. Packaging

Systems & Compliance

ISO 9001

ISO 9001

To standardize production, R&D, and sales, control risk, and improve returns, we obtained ISO 9001 certification in 2016.

We continue to strengthen management, raise product and service satisfaction, pursue zero defects, and keep quality at a high level.

RoHS

RoHS

The EU RoHS Directive (2003) restricts hazardous substances in electrical and electronic equipment. Since 1 July 2006, six categories of hazardous substances have been banned in products entering the EU market.

REACH SVHC

REACH SVHC

REACH aims to protect human health and the environment and improve chemical safety and transparency. Chemicals imported into or produced in Europe must go through registration, evaluation, authorization, and restriction so that composition is clearly identified and safety is ensured.

Contact us

Contact Us