General ,hereby, means excluded explosion-proof places ,goods shelves and other places need special requirements.

The environment of Industrial workplace is very worse, dust-proof, water-proof, corrosion-proof, crash-proof e.g. are some basic demands.

Most of industrial places can up to 10m, even 50m, high efficacy is necessary for a qualified industrial fixture.

The other key factors are low UGR, low light degradation, long service lifespan, low maintance, meanwhile, economical.