30 USA 
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2x2ba optical switch Photos Catalog - page 89 - WorldBid B2B Market
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Leading Optical Brightener ObChemicals - Dyes / Pigments - TIANJIN LEADING IMPORT & EXPORT CO., LTD - China - August 31, 2025 - contact company for priceOptical brightener OB is poorly soluble in water, and soluble in alkane, mineral oil, and common organic solvents. 1. Applications: Optical Brightener OB can be used for whitening thermoplastics, PVC, PS, PE, PP, ABS, acetate fibre, paint, coating, p...