We are one of the biggest exporters and manufacturers of Optical brighteners (fluorescent whitening agent), intermediates and pigments in China.  
For detergent use, now we offer several different types for your choice.

1) Brightener CBS-X, C.I. No.: 351

2) CXT, C.I. No.: 71

3) Brightener DMS, C.I. No.: 71
For fabric use,
1) Brightener ER-330, C.I. No.: 199

2) Brightener EB-330, C.I. No.: 199:1

3) BrightenerER, C.I. No.: 199

For detergent use,
1) BrightenerCBS-X, C.I. No.: 351

2)BrightenerCXT,  C.I. No.: 71

For plastic use,
1) Brightener  OB, C.I. No.: 184

2) Brightene   OB-1, C.I. No.: 393
3) Brightener  CBS-127, C.I. No.: 378

4) Brightener  KCB, C.I. No: 367
5) Brightener  MDAC, C.I. No.: 91

Except these three products, we can provide some other products according to your requirement.  For more information, pls contact me directly.