A worker overlooking an industrial site and its surrounding landscape

HEALTH · PRODUCTION SAFETY · ENVIRONMENT

Safer, cleaner air in every factory.

Research, lessons and tools for dust, fume, mist and solvent vapours — connecting healthier work, safer production and environmental responsibility.

Worker health

Understand exposure at work

Production safety

Understand engineering risk

Environment

Consider emissions and resources

An air-control decision affects workers, production and the surrounding environment. ZGL starts with the work people actually do, turning research into explanations and resources that can be used at a factory.

INDUSTRIES & VALUE CHAINS

Follow an industry from material to recovery

All industries

From food, textiles and materials to equipment, vehicles and electronics, follow supply, manufacturing, use and recovery into specific processes and control guides.

RESEARCH & INSIGHT

Findings first. Evidence alongside.

Research library

Why might fume remain at a workstation while a cleaner is running? Our articles explain generation, capture, treatment and maintenance, with original sources beside the findings.

Technician records observations beside a local-exhaust bench, with an exterior discharge installation visible beyond the workshop.
Workplace exposure and external discharge are separate assessment contexts.
RESEARCH BRIEF

Emission compliance and workplace air: two boundaries, two evidence sets

Separate discharge and exposure evidence while connecting source capture, treatment and the real production task.

  1. A stated cleaner efficiency does not explain contaminants that escaped before reaching the device.
  2. A running extraction system does not establish effective control for every station and task.
  3. Measurements in normal production do not automatically cover material changes, cleaning and maintenance.
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PRACTICAL RESOURCES

Turn research into something you can use

Start with a complete exercise and its answers, then prepare a record for your own task. Lessons, worker cards, worksheets and calculation tools are free to use; the relevant conditions stay with each resource.

A first task review: illustrative study scene
Research preparation illustration

A first task review

Collect the process, workers, sources and current controls before choosing a solution.

Open resource
Technician with eye, respiratory and hand protection inspects an idle capture bench with side panels and an extraction duct.
Inspection of an idle capture station

Lessons and complete exercises

Understand principles, system interfaces and the limits of the evidence.

Open resource
Illustration for discussing hood-to-workbench position, not a recommended capture distance or validated arrangement.
Engineering-estimate illustration

Estimates for discussion

Calculate with stated units and assumptions; check applicability before design.

Open resource
PROJECT OBSERVATION

Changes you can see. Sources you can inspect.

Find concise project records by recorded region, industry and source date, and follow the original into process and environmental questions.

Explore public projects
China and global knowledge
COLLABORATION

Prepare the question, evidence and responsibilities

Equipment decisions need operating conditions, interfaces, maintenance and acceptance criteria. A retrofit also needs production planning and assigned responsibilities. Use the comparison records and examples to discuss a specific task with the professional services you choose.

Equipment and systems

Clarify operating conditions, equipment interfaces and comparison criteria.

Procurement comparison

Engineering and integration

Clarify project scope, interface responsibilities and implementation constraints.

Enclosure and production cycles
RESEARCH WE CAN STAND BEHIND

Evidence, independence and corrections

Our mission is to advance worker health, production safety and environmental improvement through verifiable industrial-air research, connecting knowledge and industrial practice in China and internationally. Sources and revisions remain available, international material keeps its jurisdiction, and editorial judgement, industry support and personal information are handled separately.