Airtight Door

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Airtight Door

Mingren specializes in R&D and manufacturing of airtight cleanroom doors, with independent production facilities and complete processing lines. We focus on providing reliable door solutions for medical institutions, pharmaceutical factories, dust-free workshops and biological laboratories, supporting customized non-standard products and full door-to-door installation and after-sales services.

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Product Description

Core Product Advantages

Our airtight doors are available in galvanized steel (spray-coated) and 304 stainless steel, with integral bending seamless process and antibacterial finish, resistant to long-term disinfection and easy to clean. The high-density aluminum honeycomb core ensures lightweight yet robust structure, resisting dents and deformation from frequent use. Equipped with double-layer anti-fog explosion-proof observation windows for convenient visual inspection.

Airtight Sealing Design: The stepped occlusal structure with full-circle high-density airtight rubber strips and automatic bottom sealing strip form a complete sealing system, stably maintaining indoor pressure differentials and blocking dust, germs and odors. The anti-aging rubber strips resist disinfectant corrosion for long-term stable performance.

Model Options: Motorized models support contact-free access via gesture sensors and foot pedals, with mute operation, anti-pinch function and emergency manual clutch for power failure scenarios; manual models feature simple sturdy structure, low failure rate and cost-effective maintenance, suitable for areas with moderate traffic. Both models deliver consistent high-standard sealing performance.

Application Scenarios

Widely used in hospital operating rooms, ICUs, negative pressure wards, pharmaceutical sterile workshops, food processing zones, electronic dust-free workshops, biological laboratories and other sterile spaces requiring bacteria/dust control and stable pressure differentials.

Customization & Services

We provide custom single and double-leaf doors tailored to wall dimensions and project requirements, with optional attachments including crash strips, access control systems, room interlocking devices and pressure differential alert systems. On-site survey service is available to optimize installation solutions, and all products come with long-term warranty and rapid nationwide on-site after-sales support.

Product Name	Airtight door
Door Type	1M -2M
Construction	The airtight door is fitted with surrounding sealing strips. The compression mechanism closes gaps between door leaf and frame to form an airtight barrier and block air circulation for clean area protection.
Way to open door	Hand, Foot, Password，Tap Card, Fingerprint, Remote Control, Face Recognition, etc.
Window	Standard size: 400 x 600 millimeters. Made of tempered glass with 3C certification. The periphery is a black rubber frame. Various window configurations.
Door Fan Thickness	42mm,43mm.
Core	Paper honeycomb
Face Sheet Material	Stainless Steel 304#/ 201#/ Galvanized steel
Finish	Polished/ Spray painting
Seal	Full perimeter gasketing
Applications	Hospital, Food, Cold storage, Pet, Compliant Cleanroom, etc.
Warranty	1Years

Certificate

FAQ

Q：

What authoritative qualifications does your company possess? Do your products meet domestic and international standards?

A：

Our purification products strictly comply with national domestic standards for hospital purification projects and industrial cleanroom codes. The shielding parameters of our radiation protection products exceed national standard limits. The full product range is equipped with factory inspection reports and third-party test certificates. Export products are certified with CE marks, fully satisfying compliance requirements for domestic hospital EIA acceptance, overseas customs clearance, and overseas project supervision audits. Meanwhile, we hold complete general contracting qualifications for purification and radiation shielding projects, capable of delivering full EPC turnkey contracts.

Q：

What are your core business scopes? Can you undertake domestic and overseas projects?

A：

Our two core business segments cover full R&D and manufacturing of purification equipment, turnkey purification engineering, full-series radiation shielding products, and special radiation shielding projects. Our domestic business covers all provinces and municipalities nationwide. We also hold complete foreign trade export qualifications. Our products and engineering technical services can be deployed across Southeast Asia, the Middle East, Africa, Central Asia, Latin America and other global regions. We provide full overseas solutions including bulk export supply, dispatched overseas construction guidance, and localized on-site training.

Q：

Do you own independent production workshops or outsource manufacturing?

A：

We operate a fully self-owned industrial production park in Liaocheng, with multiple independent production lines for clean doors, color steel purification panels and lead shielding components. We conduct independent raw material procurement and deep processing with no outsourced manufacturing. Full-process quality control is implemented from raw materials to finished goods, supporting mass customized production.

Q：

What types of purification products do you offer? Is non-standard customization available?

A：

Our flagship purification products include airtight clean doors, automatic medical airtight doors, purification color steel plates, purification air conditioning units, stainless steel clean hardware components, and clean enclosure profiles. We support non-standard customization on dimensions, special structures, anti-corrosion and antibacterial processes for cleanliness levels ranging from Class 100 to Class 100,000. Our products are widely applied in hospital operating rooms, ICUs, PCR laboratories, biopharmaceutical factories, electronic dust-free workshops and other scenarios.

Q：

What purification projects can you undertake? What is your complete service workflow?

A：

We deliver general contracting purification projects for hospital operating rooms, ICUs, central sterile supply departments, endoscopy centers, medical laboratories, as well as new construction and renovation of industrial dust-free workshops. Our one-stop EPC workflow: Site Survey → Cleanliness Level Scheme Design → Drawing Deepening → Component Manufacturing at Our Factory → Standardized On-site Construction → System Commissioning → Third-party Inspection & Acceptance → Permanent File Establishment for Long-term Maintenance.

Q：

What is the typical construction period for purification projects? How is after-sales service guaranteed in the long run?

A：

The construction period is calculated according to project area and cleanliness grade. Small-scale ward projects take 7–15 working days. For full-floor operating rooms or large industrial workshops, we will issue a dedicated detailed construction schedule. Domestic clients enjoy 24/7 online emergency after-sales support and periodic free on-site inspections. Permanent project files are created for all purification projects with warranty periods superior to common industrial standards.

Q：

What radiation shielding products are available? How to select products for different radiation scenarios?

A：

Our shielding product portfolio includes motorized/manual lead shielding doors, high-purity lead sheets, radiation-proof lead glass, barium sulfate shielding paint/sand, mobile lead screens, and dedicated shielding components for industrial flaw detection. Our technical team calculates precise lead equivalence for different radiation doses generated by DR, X-ray, CT, mammography, radiotherapy, nuclear medicine, industrial non-destructive testing and university research laboratories, developing customized shielding schemes to avoid insufficient protection or material waste.

Q：

Can you assist with radiation EIA acceptance upon completion of radiation shielding projects?

A：

Yes. After full completion of radiation shielding works, we provide complete as-built documentation and shielding performance test reports, assisting clients in coordinating with environmental authorities for radiation EIA approval and department practice qualification inspection to streamline complicated document submission work.

Q：

How do you guarantee the quality of lead raw materials? Is there any risk of adulteration or downgraded materials?

A：

We exclusively adopt high-purity virgin lead and reject recycled impure lead materials. Each batch of raw materials comes with material test certificates. Finished products undergo secondary random radiation shielding sampling tests. On-site shielding performance testing is available post-construction. We guarantee unconditional rework and rectification if test parameters fail to meet requirements.

Q：

Are your quotations fixed or project-customized?

A：

All purification and radiation shielding products & projects adopt project-specific customized quotations. Product pricing is determined by dimensions, material craftsmanship and order quantity. Engineering quotations contain detailed itemized pricing based on site area, cleanliness level / radiation equivalence, construction environment and technical difficulty. Our quotations are fully transparent with no hidden extra charges.

Q：

Will construction costs surge significantly for off-site projects?

A：

We have established cooperative construction outlets across the country. Off-site projects adopt local construction teams supervised by headquarters technical managers, which drastically reduces travel and labor premium costs. Our nationwide standardized pricing system prohibits arbitrary price hikes based on geographical locations.

Q：

Are there preferential policies for long-term bulk procurement?

A：

We launch tiered bulk pricing, annual rebate policies, priority production scheduling and free technical scheme design for general contractors, long-term distributors and fixed overseas foreign trade clients. Detailed terms can be finalized through business negotiations for long-term cooperation agreements.

Q：

What domestic cooperation modes are available? Do you accept project subcontracting?

A：

For domestic hospital general contractors, construction firms, decoration companies and medical construction groups, we offer multiple cooperation models: project subcontracting, bulk material supply, full EPC general contracting, and long-term regional channel agency. We deploy local construction teams nearby to shorten construction cycles and cut transportation costs.

Q：

What overseas cooperation modes do you provide? How are logistics and delivery arranged?

A：

Overseas cooperation options include full-container FOB/CIF bulk supply, dispatched engineer construction guidance for overseas infrastructure projects, technical training for local overseas construction teams, and long-term overseas project maintenance services. We collaborate with established international logistics providers with multi-port delivery capabilities, supporting project subcontract delivery for overseas general contractors and multi-currency settlement.

Q：

How do you manage drawing communication and technical docking for customized overseas projects?

A：

We have set up a dedicated overseas foreign trade technical team providing 7×16-hour Chinese-English bilingual online technical support. Services include foreign-language drawing deepening, process translation, working condition adaptive modification, and construction scheme adjustment in compliance with local building codes of different overseas countries.

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