low smoke and halogen free
Free acceleration smoke
Smoke Exhausted at Free Acceleration
flame retardant halogen free
free halogen flame retardant
free halogen flame-retardant
free halogen flame-retardant composite
halogen and phosphorus free
Halogen Free Flame Retardant
halogen free flame retar-dant
halogen free flame retarding
halogen free FR-4 copper clad laminates
Small Smoke and Low Halogen
mechanical smoke exhaust at low level