Optical Brightener OB-1 (FBA 393) is a premier chemical additive widely utilized in high-temperature polymer processing, synthetic fiber production, and masterbatch manufacturing. Renowned for its superior thermal stability, exceptional whitening efficiency, and excellent resistance to sublimation, finding a reliable factory partner is essential for maintaining consistent industrial output. For overseas importers, global distributors, and custom formulation buyers, partnering with an experienced China manufacturer ensures stable chemical purity, OEM/ODM production scalability, and highly competitive wholesale bulk pricing.

Hangzhou Reward Technology Co., Ltd

Hangzhou Reward Technology Co., Ltd is an established specialty chemical manufacturer and global supply chain enterprise based in Zhejiang, China. Specializing in high-performance dyestuffs, optical brighteners, and custom chemical additives, the company operates state-of-the-art production facilities geared toward wholesale chemical exports. With advanced synthesis technology and rigid quality verification procedures, Hangzhou Reward supplies Optical Brightener OB-1 with purity levels exceeding 99%, serving industrial clients in plastic molding, polyester fiber extrusion, and masterbatch compounding. Their infrastructure supports flexible OEM/ODM contract manufacturing, custom mesh size particle sizing, tailored packaging choices, and rapid bulk logistics, making them a cornerstone supplier for international buyers seeking reliable Chinese factory sourcing.

Operating extensive chemical manufacturing facilities in North China, Shanxi New Century Fine Chemical focuses on heavy-tonnage production of fluorescent whitening agents. Their chemical synthesis plants produce Optical Brightener OB-1 tailored for high-temperature engineering plastics like PVC, ABS, PS, and PET. By maintaining large-scale bulk raw material stocks and standardized quality management, the enterprise satisfies high-volume global wholesale demands with stable batch-to-batch chemical purity and uniform yellowness index reduction.

Headquartered in the industrial chemical hub of Shandong Province, Shandong Raytop Chemical is a specialized developer and international distributor of polymer additive systems. The firm manufactures Optical Brightener OB-1 in both standard powder and micronized grades to suit various masterbatch and plastic compounding requirements. They provide technical custom formulations and international logistics handling to support overseas manufacturing facilities, plastic molders, and chemical importers across worldwide markets.

Situated in Central China, Hubei Kamson Chemical concentrates on the chemical synthesis and wholesale export of fluorescent optical brighteners and fine chemical intermediates. Their Optical Brightener OB-1 supply chain covers standard commercial grades suitable for high-density polyethylene, polypropylene, and synthetic fiber spinning. The company manages export-compliant chemical packaging options and provides customized batch analysis reports for international trade partners.

Based in Central China's manufacturing sector, Henan Brilliance Fine Chemical specializes in supplying organic fluorescent compounds and functional additives for plastics, coatings, and rubber. Their standard production line for Optical Brightener OB-1 yields thermal-resistant formulations engineered specifically for high-temperature extrusion processing. They maintain steady inventory levels to cater to contract buyers, custom compounders, and regional distributors requiring consistent quality shipments.