Global Manufacturing · Thailand & China

Factory &
Production

Two world-class facilities — a brand-new 30,000㎡ production hub in Thailand, backed by 30 years of manufacturing heritage in China.

Suilun Thailand Factory Entrance — Chonburi Province
🇹🇭 Chonburi Province, Thailand
Thailand Production Hub · Est. 2024

Suilun Hardware (Thailand) Co., Ltd.

Located in Chonburi Province, Thailand — one of Southeast Asia's premier industrial zones — our flagship production facility is purpose-built for scale, speed, and global logistics. Positioned just 30 km from Laem Chabang, Thailand's largest deep-sea port, we ship direct to US retail distribution centers faster than any factory in China.

From raw steel coil to packaged finished product, every step happens under one roof — full process control, zero outsourcing.

16 Acres
Total Site Area
30,000㎡
Production Floor
300+
Skilled Employees
100M+
Annual Capacity (Hinges)
Suilun Hardware Thailand Factory — Aerial Panoramic View
Aerial View · Chonburi Province, Thailand

16 Acres.
30,000㎡
Under One Roof.

Solar-ready roofing, ERP-integrated logistics, and a full production chain — from raw steel coil to retail-ready hinge — on a single campus 30 km from Laem Chabang Port.

🇹🇭

Chonburi Province, Thailand

Eastern Economic Corridor — Southeast Asia's Premier Industrial Zone

🚢
30 km
Laem Chabang Port
✈️
70 km
Bangkok Airport (BKK)
🏭
EEC Zone
Premier Industrial Region
China Manufacturing Heritage · 23 Years

Zhejiang Pinghu Hinge Co., Ltd.

浙江省平湖铰链有限公司 — our parent company, established in Pinghu City, Jiaxing, Zhejiang Province, is one of China's largest dedicated hinge manufacturers. With 23 years of continuous operation and over 280 employees, Pinghu Hinge is the engineering and R&D backbone behind every Suilun product.

The company operates an end-to-end vertically integrated production line — from coil plate import through cutting, cold rolling, stamping, and electroplating — with 356 presses running in-house. Exports reach 100+ countries. Awarded the 狮球牌 (Lion Ball) Zhejiang Province Famous Trademark.

23 Yrs
In Operation
46,600㎡
Factory Area
280
Employees
550+
Hinge Varieties
420M RMB
Annual Output (2022)
ISO 9001
Certified
Addresses
🏭Production Base: 浙江省平湖市独山港镇穗轮工业园区
Suilun Industrial Park, Dushangang Town, Pinghu City, Zhejiang
🏢Trade Office: 嘉兴市南湖区中环广场西区A座601-602室
Room 601-602, Block A, Zhonghuan Plaza West, Nanhu District, Jiaxing
Zhejiang Pinghu Hinge Factory — Suilun Industrial Park
🇨🇳 Pinghu City, Zhejiang, China
Honors & Recognition

Awarded at Every Level

Pinghu Hinge has been recognized by national and provincial authorities for quality, export performance, and brand excellence — building a foundation of trust that Suilun inherits and extends globally.

Zhejiang Province Famous Trademark
浙江省著名商标
Zhejiang Famous Trademark
Jiaxing Famous Brand — Lion Ball Trademark
嘉兴市著名商标
狮球牌 Lion Ball Brand
Jiaxing Famous Brand Product
嘉兴名牌产品
Jiaxing Famous Brand
Jiaxing Key Export Enterprise
嘉兴市外贸出口
重点企业
5 Core Workshops

End-to-End Production
Under One Roof

Every process — raw material to packaged finished product — happens in-house. No outsourcing. No compromise on quality.

Pressing & Stamping Workshop — BOXIN Presses
01
Workshop 01

Pressing & Stamping

High-speed steel cutting and cold-rolling presses form raw material into precise hinge leaves, brackets, and components. Automated stamping lines run at tolerances measured in fractions of a millimeter.

  • High-tonnage progressive stamping presses
  • Cold-roll forming for bracket and slide profiles
  • Automated coil feeding and part ejection
  • In-line dimensional inspection
Polishing & Surface Preparation Workshop
02
Workshop 02

Polishing Workshop

Surface preparation is critical to both appearance and plating adhesion. Our polishing workshop uses automated barrel finishing and belt sanding to achieve consistent, commercial-grade surface quality across millions of parts per month.

  • Automated barrel and vibratory finishing
  • Belt and wheel polishing for premium finishes
  • Surface roughness measurement (Ra testing)
  • Pre-treatment cleaning for optimal plating adhesion
Electroplating & Surface Treatment Lines
03
Workshop 03

Electroplating & Surface Treatment

Eight automated surface treatment lines deliver electroplating, electrophoresis (e-coating), and powder coating. Salt spray testing up to 1,000 hours ensures every product meets the most demanding US market corrosion standards.

  • 8 automated electroplating & e-coat lines
  • Salt spray testing up to 1,000 hours
  • Zinc, nickel, chrome, and brass plating
  • Powder coating: 50+ stock colors + custom RAL
  • Closed-loop environmental waste treatment
Assembly & Quality Control Workshop
04
Workshop 04

Assembly & Quality Control

Finished components come together on high-efficiency assembly lines — pins are pressed, springs tensioned, ball bearings installed, and every unit is functionally tested before it leaves the line. UL compliance is verified on every applicable product.

  • Semi-automated pin press and riveting systems
  • Spring tensioning and calibration stations
  • Ball-bearing installation and torque testing
  • 100% functional test on spring-hinge products
  • UL compliance verification for listed products
Packaging & Finished Goods Warehouse
05
Workshop 05

Packaging & Warehouse

Modern warehouse with forklift-assisted racking and ERP-integrated inventory management. Products are packaged to Home Depot, Builders FirstSource, and private-label specifications — retail-ready, direct to shelf.

  • Retail-ready blister, clamshell, and box formats
  • Private label and custom packaging programs
  • ERP-integrated inventory and order management
  • Container-load optimization for export
  • 30 km direct route to Laem Chabang Port
Full Capabilities

What We Can Do for You

🔩

Stamping & Forming

Progressive dies, single-station stamping, and cold-roll forming. Steel gauge from 0.8mm to 6mm.

✨

Surface Treatment

Electroplating, e-coating, powder coating, polishing. 1,000-hour salt spray capability.

⚙️

Assembly & Testing

Full assembly lines with functional testing, torque calibration, and UL compliance verification.

📦

Custom Packaging

Retail-ready, private label, bulk export. Packaged to any customer specification.

🎨

50+ Finishes

Satin nickel, oil-rubbed bronze, polished brass, matte black, custom color — any finish at volume.

🌿

Environmental Systems

Full waste gas, wastewater, and dust treatment. Compliant with international environmental standards.

Certifications & Testing

Every Claim, Backed by Documentation

ISO 9001 quality management, UL listing for fire-door spring hinges, and BHMA compliance testing — all on file across both Thailand and China facilities.

ISO 9001:2015 Certificate — Suilun Hardware Thailand
ISO ISO 9001:2015 — Suilun Hardware (Thailand) Co., Ltd.
UL Certificate of Compliance — Fire Door Spring Hinge
UL UL Certificate — Swinging Fire Door Closers (ANSI/BHMA A156.17)
ISO 9001:2015 Certificate — Zhejiang Pinghu Hinge Co., Ltd.
ISO ISO 9001:2015 — Zhejiang Pinghu Hinge Co., Ltd.

Independent Lab Test Reports

Third-party performance and corrosion testing by Intertek and SGS to ANSI/BHMA A156.1 — 350,000-cycle Grade 1 durability and salt-spray corrosion resistance. Every model passed. Click any report to view the full document.

SGS Cycle Test Report — HINGE SN, 350,000 cycles Grade 1, PASS
SGS Cycle Test — HINGE SN · 350,000 cycles, Grade 1 · PASS
Intertek Salt-Spray Test Report — HINGE SN, PASS
Intertek Salt-Spray — HINGE SN (4"×4"×2.5mm) · PASS
Intertek Salt-Spray Test Report — HINGE FB, PASS
Intertek Salt-Spray — HINGE FB (4"×4"×2.5mm) · PASS
Intertek Salt-Spray Test Report — HINGE DN, PASS
Intertek Salt-Spray — HINGE DN (4"×4"×2.2mm) · PASS
Intertek Salt-Spray Test Report — HINGE FS (OWB), PASS
Intertek Salt-Spray — HINGE FS (OWB) (3.5"×3.5"×2.2mm) · PASS
Intertek Salt-Spray Test Report (full PDF) — HINGE ZC 4x4x2.5mm, PASS
Intertek Salt-Spray — HINGE ZC (4"×4"×2.5mm) · PASS · PDF
Intertek Salt-Spray Test Report (full PDF) — HINGE FB(OWB) 4x4x2.2mm, PASS
Intertek Salt-Spray — HINGE FB (OWB) (4"×4"×2.2mm) · PASS · PDF
Intertek Salt-Spray Test Report (full PDF) — HINGE ZC 4-1/4x4x2.5mm, PASS
Intertek Salt-Spray — HINGE ZC (4-1/4"×4"×2.5mm) · PASS · PDF
Quality & Compliance

Certified at Every Level

International certifications that reflect our commitment to quality, safety, and sustainability — across both facilities.

🏅

ISO 9001:2015

Quality management system certified across both Thailand and China facilities. Valid through 2026–2029.

🔥

UL Listed

Underwriters Laboratories listing GVEV.R25856 for self-closing spring hinges used in fire-rated door assemblies.

✅

BHMA Compliant

Full compliance testing per ANSI/BHMA A156.17 — covering friction, cycle, overload, hinge pin rise, and 1,000-hour salt spray.