2010
Founded
5000㎡
Factory Area
40+
Team Members
9
Production Processes
What We Build
Product Categories
Six specialized sheet-metal product lines covering new energy, power, telecom and intelligent equipment.
New Energy Charging Equipment
AC/DC charging pile enclosures and charging supporting sheet-metal parts.
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Energy Storage & Power Equipment
BESS cabinets, PV/wind supporting parts and high-low voltage distribution cabinets.
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Industrial HMI & Monitor Enclosures
Kiosk, education display, digital signage and industrial monitor housings.
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Telecom & Network Cabinets
Fiber-optic boxes, network device chassis and telecom communication cabinets.
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Industrial Control Equipment
Equipment chassis, control cabinets and custom precision structural parts.
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Outdoor Security & Municipal
Protection boxes, control boxes and outdoor cabinet supporting parts.
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Featured Work
Featured Products
Representative enclosures and chassis fabricated for real-world applications.
Air-Cooled ESS AC-DC Cabinet
241kWh Liquid-Cooled Storage Cabinet
Non-Standard Blade Battery Box
Laser-Perforated Multimedia Panel
Precision 2U Rack Chassis
Why SanJun
Core Advantages
One-Stop OEM / ODM
From design, cutting and bending to finishing and assembly — a single partner for the whole product.
Free CAD & DFM
Free drawing design and DFM engineering to optimize cost, structure and manufacturability.
Strict Quality Control
ISO 9001 / 14001 management and IP54–IP66 protection tested at every stage.
Fast, Flexible Delivery
Standard parts in 7–15 days, custom builds in 20–30 days with responsive support.
Buyer Resources
What Does a Custom Enclosure Actually Cost?
A 2026 breakdown of the seven cost components behind a sheet metal enclosure quote — material multipliers, bend count, tolerance, weld volume, finishing scope, IP rating and lead time — with cost structure for six enclosure categories and the tariff math that decides whether China sourcing still works. 2026 年定制钣金外壳报价的七个成本构成拆解——材料倍率、折弯数量、公差、焊接量、表面处理范围、IP 等级与交期，并给出六类外壳的成本结构，以及决定中国采购是否仍然划算的关税算法。
Read the custom sheet metal enclosure cost guide 阅读定制钣金外壳成本指南
Company Introduction
Inside SanJun Hardware
A quick look at our factory, capabilities and fabrication processes.
Company Introduction · SanJun Hardware
How We Work
Production Process
One-stop sheet metal fabrication in nine controlled steps.
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01
Free Drawing Design & DFM
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02
Laser Cutting
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03
Precision Bending
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04
Forming
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05
Welding
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06
Grinding & Deburring
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07
Riveting
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08
Electrostatic Powder Coating
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09
Assembly & QC
Certified & Reliable
Quality & Certifications
ISO 9001
Quality Management
ISO 14001
Environmental Management
IP54 / IP65
Ingress Protection
RoHS / REACH
Material Compliance
Get in Touch
Request a Quote
Tell us about your project and we'll reply within 24 hours.