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Precision Clean Room Solutions

High-performance clean room equipment and HEPA filtration systems engineered for pharmaceutical, biotech, and industrial environments. ISO-certified, RoHS-compliant, and built for reliability.

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1998
Founded
1000+
Global Clients
ISO 9001
Certified

Your Professional & Reliable Partner

LENGE, founded in 1998, is a comprehensive high-tech company integrating R&D, production, sales, testing, and service. We specialize in microporous filter membranes, pleated filter cartridges, air filters, purification equipment, and cleanroom engineering solutions.

Through years of exploration and improvement, LENGE has achieved ISO9001, ISO14001, and ISO45001 certifications, ensuring excellence in quality, environmental management, and occupational health and safety.

  • ISO 9001, 14001, 45001 Certified
  • RoHS & GMP Compliant
  • Custom Engineering & OEM Support
Lenge Factory

Premium Clean Room Products

Explore our full range of high-efficiency filtration and contamination control systems designed for ISO Class 5 to Class 8 environments.

Cleanroom Air Shower

Cleanroom Air Shower

High-efficiency air shower with inflatable seals for personnel decontamination in labs and industrial production.

  • Material: SUS 304
  • Velocity: 0.45 ± 20% m/s
  • Filters: G4 + H14 HEPA
  • Power: 380V (Customizable)
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Cleanroom Pass Box

VHP Sterilization Pass Box

GMP-certified vaporized hydrogen peroxide decontamination cabinet for sterile transfer.

  • Material: Stainless Steel 316L
  • CE & GMP Certified
  • Custom Sizes Available
  • Biodecontamination Cycle
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Laminar Air Flow

Laminar Air Flow Workbench

HEPA-filtered laminar flow bench with UV lamps for bio-pharma applications.

  • Class A Clean Level
  • Wind Speed: 0.45 m/s ±20%
  • Material: SS304 / 316L
  • ISO 6-8 Certified
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HEPA Box

HEPA Box Air Terminal

Ceiling-mounted HEPA filter housing with 1000m³/h air volume for pharmaceutical cleanrooms.

  • Material: ABS / SUS304 / AL
  • Flame Retardant: UL94-V0
  • Custom Flow Rates
  • Smooth Inner Surface
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Bag In Bag Out System

Bag-In/Bag-Out Filter System

Fully welded SUS316L system to prevent harmful aerosol release in hazardous environments.

  • Material: SUS304 / SUS316L
  • Usage: Hazardous Air Purification
  • Pre-filter + HEPA + Scanner
  • Custom Sizes
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Dispensing Booth

Powder Dispensing Booth

Weighing and sampling booth for raw materials with HEPA filtration and containment.

  • Material: SUS 304
  • Velocity: 0.45 m/s ±20%
  • Filters: G4, F8, H14
  • Custom Power Options
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Pleated Filter Cartridge

PES Pleated Filter Cartridge

Hydrophilic PES membrane filter with 0.22μm / 0.45μm pore size for liquid and gas filtration.

  • Length: 10 inch
  • Pore Sizes: 0.04–0.8μm
  • Support: PP
  • Caps: 226 / 222
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Stainless Steel Sink

Electropolished 316L Sink

Grade A cleanroom sink with smooth, easy-to-clean surface for pharmaceutical use.

  • Material: 316L Stainless Steel
  • Finish: Electrolytic Polished
  • Complies with GMP Standards
  • Custom Dimensions
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View All 150+ Products

Why Choose LENGE?

Engineered for performance, compliance, and long-term reliability.

ISO Certified

Compliant with ISO9001, 14001, and 45001 standards for quality and safety.

RoHS & GMP

All products meet environmental and pharmaceutical manufacturing standards.

Rapid Customization

Tailored engineering and OEM support for unique cleanroom requirements.

Fast Global Delivery

Efficient logistics network serving clients in over 50 countries.

Frequently Asked Questions

What cleanroom classes do your products support?

Our equipment is designed for ISO Class 5 (Class 100) up to ISO Class 8 (Class 100,000) environments, commonly used in pharmaceutical, biotech, and electronics manufacturing.

Are your HEPA filters tested and certified?

Yes, all HEPA filters are tested per IEST standards and certified to H13 or H14 efficiency (99.99% @ 0.3μm). Test reports are available upon request.

Can you customize equipment dimensions?

Absolutely. We offer full customization for size, materials, voltage, and filtration configuration to meet your facility’s exact requirements.

What is the lead time for custom orders?

Standard lead time is 4–6 weeks depending on complexity. Urgent orders can be expedited upon request.

Get in Touch

For quotes, technical support, or custom engineering inquiries, visit our official website to connect with our team.

Visit Official Website

Email: export@wxljjh.com

Phone: 86-510-85189266-8029

Contact Person: Ms. Ada

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