
Metals and machinery
Materials · forming · joining · recovery

HEALTH · PRODUCTION SAFETY · ENVIRONMENT
Research, lessons and tools for dust, fume, mist and solvent vapours — connecting healthier work, safer production and environmental responsibility.
Understand exposure at work
Understand engineering risk
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.
From food, textiles and materials to equipment, vehicles and electronics, follow supply, manufacturing, use and recovery into specific processes and control guides.

Materials · forming · joining · recovery

Ingredients · processes · air and water

Body · parts · coating · use

Reactions · separation · controls · residues
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.

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

Collect the process, workers, sources and current controls before choosing a solution.
Open resource
Understand principles, system interfaces and the limits of the evidence.
Open resource
Calculate with stated units and assumptions; check applicability before design.
Open resourceFind concise project records by recorded region, industry and source date, and follow the original into process and environmental questions.
Explore public projects
Find public project records by province, industry and source date.
Browse the 2026 records
Connect public records to their industrial-air questions. Publish source material and protect private information.
Read observationsEquipment 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.
Clarify operating conditions, equipment interfaces and comparison criteria.
Procurement comparisonClarify project scope, interface responsibilities and implementation constraints.
Enclosure and production cyclesOur 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.