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Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd.

Custom Industrial & Hangar Door Solutions | 20+ Years of Manufacturing Experience

Manufacturer from China
Verified Supplier
1 Years
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Sliding Hangar Door

 [15]

Folding Hangar Door

 [10]

Metal Folding Door

 [17]

Glass Folding Door

 [8]

Overhead Sectional Door

 [11]

Sliding Industrial Door

 [5]

Swing Door

 [2]

Metal Shutter Door

 [15]

High Speed Shutter Door

 [12]

PVC Shutter Door

 [2]

Metal Garage Door

 [16]

Glass Garage Door

 [9]

Metal Fire Door

 [9]

Glass Fire Door

 [1]

Fire Shutter Door

 [3]

Fire Rated Window

 [1]

PVC High Speed Door

 [15]

Stacking High Speed Door

 [3]

Flexible High Speed Door

 [8]

Insulated High Speed Door

 [4]

Outdoor Sunroom

 [5]

Outdoor Pergola

 [2]

Rolling Shutter Window

 [3]

Electric Skylight

 [5]

Smart Skylight

 [3]

Manual Skylight

 [3]

Cleanroom Door

 [6]

Hospital Door

 [4]

Hermetic Door

 [3]

X Ray Room Door

 [1]
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Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd.
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City:changsha
Province/State:hunan
Country/Region:china
Contact Person:MsOU
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Quality Control


Quality Creates Trust, Certificates Witness Strength.
We never treat certifications as mere decorations. Every qualification comes from repeated testing, standardized production and strict quality audits. From material selection, structural simulation, prototype verification to factory inspection, every link follows international norms. Our patents, High-Tech Enterprise qualification, CE and ISO9001 certificates prove our commitment to stable, reliable industrial door solutions for global clients.
Certifications
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: MANAGEMENT SYSTEM CERTIFICATION
Number: 062126Q00091R001
Issue Date: 2026-04-15
Expiry Date: 2029-04-14
Scope/Range: MANAGEMENT SYSTEM
Issued By: Heervan
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: OCCUPATIONAL HEALTH AND SAFETY MANAGEMENT SUSTEM CERTIFICATION
Number: 062126S00057R001
Issue Date: 2026-04-15
Expiry Date: 2029-04-14
Scope/Range: HEALTH AND SAFETY
Issued By: Heervan
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: ENVIRONMENT MANAGEMENT SYSTEM CERTIFICATION
Number: 062126E00056R001
Issue Date: 2026-04-15
Expiry Date: 2029-04-14
Scope/Range: ENVIRONMENT
Issued By: Heervan
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: CE
Number: Nr. SC-PSC-4-2026-05-40
Issue Date: 2026-05-25
Expiry Date: 2031-05-24
Scope/Range: KSM、DJM、ZDM、GYM、JLM、CKM、JKM、KFM、FBJLM、CZM、TSM、JJM、GYM、PKM、TLM、PYM、FHM、FHJLM、LKM、SNM、MM、RHM、 FDM、LHJM、MBM、FBM、TZM、ZYMC、FIXED WIN
Issued By: CERTIFICATION Center
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: High-tech Enterprise
Number: GR202543003539
Issue Date: 2025-12-08
Expiry Date: 2028-12-08
Scope/Range: Applicable Scope of State-recognized High-tech Enterprises
Issued By:
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: Utility model patent certificate
Number: 23080133
Issue Date: 2025-07-11
Scope/Range: Soundproof, heat-insulating, and flame-retardant folding door
Issued By: China National Intellectual Property Administration
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: Utility model patent certificate
Number: ZL 2024 2 2095735.9
Issue Date: 2025-07-11
Scope/Range: A large-scale hangar door and its drive mechanism
Issued By: China National Intellectual Property Administration
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: Utility model patent certificate
Number: No. 232126261
Issue Date: 2025-07-22
Scope/Range: sound-insulating and heat-insulating hinged door
Issued By: China National Intellectual Property Administration
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: Utility model patent certificate
Number: No. 23123190
Issue Date: 2025-07-22
Scope/Range: Multi-point cushioned double-leaf door (main and auxiliary leaf)
Issued By: China National Intellectual Property Administration
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: Utility model patent certificate
Number: ZL 2024 1 1448687.5
Issue Date: 2025-02-11
Scope/Range: Clutch mechanism for large hangar sliding doors
Issued By: China National Intellectual Property Administration
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd. Certifications
Standard: Utility model patent certificate
Number: No. 6565867
Issue Date: 2021-05-14
Scope/Range: Door
Issued By: China National Intellectual Property Administration
Company Profile
Hunan Lianxin Chitai Intelligent Doors & Windows Co., Ltd.
Contact Person: MsOU

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