Optical Brightening Agent (OBA)
Wel White N-140
Purpose Optical Brightening Agent
Characteristic Quick dyeing type optical brightening agent, applicable for Nylon and cotton.
Deliver brilliant white shade to fiber.
Good fastness to light.
Easy to use with liquid type.
Raw white.
Application Nylon
 
Wel White N-170  
Purpose Optical Brightening Agent
Characteristic Get good fluorescent brightening effect with a small dosage.
Excellent fastness to sunlight.
Good stability for using with chlorate and hydrogen peroxide.
Application Nylon, Cotton