Beijing Yangcun Chemical Co., Ltd. is a private enterprise specialized in production of optical brighteners and other fine chemical products for nearly ten years.

The company also has the strong ability of developing the new products with technical instruction of its two American returned chemical doctors. The company could guarantee the quality of its products by supporting with scientific technology and management experience, to serve sincerely the customers with its high quality products and reasonable prices, they are well received by our customers from domestic and abroad.
The company has three main kinds of products:
Optical Brightener CBS-X CAS NO.: 27322-41-8
Fluorescent Whitening Agent CBS-X C. I.: 351
Fluorescent Brightener CBS-X  4.4-bis (2-disulfonic acid styryl) biphenyl
Tinopal CBS-X
Optical Brightening Agent CBS-X

Optical Brightener KCB CAS NO.: 63310-10-1
Fluorescent Whitening Agent KCB C.I: 367
Fluorescent Brightener KCB  4.4-bis(benzoxazolyl-2-yl)naphth-alene
Optical Brightening Agent KCB

Optical Brightener SWN CAS NO.: 91-44-1
Fluorescent Whitening Agent SWN C.I.140
Fluorescent Brightener SWN 7-diethylamino-4-methylcoumarin
Optical Brightening Agent SWN
UVITEX SWN

Optical Brightener OB CAS No.: 7128-64-5
Fluorescent Whitening Agent OB C.I.184
Fluorescent Brightener OB 2.5-bis (5-tertbutyl-2-benzoxazolyl) thiophene
UVITEX OB
Optical Brightening Agent OB

Optical Brightener OB-1 CAS No.: 1533-45-5
Fluorescent Whitening Agent OB-1 C.I.393
Fluorescent Brightener OB-1 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole
UVITEX OB-ONE
Eastobrite OB-1
Optical Brightening Agent OB-1

Optical Brightener FP CAS NO.: 40470-68-6
Optical Brightener CBS-127
Fluorescent Whitening Agent FP C.I: 378
Fluorescent Whitening Agent CBS-127
Fluorescent Brightener FP 4,4-Bis[2-(2-methoxyphenyl) ethenyl ]-1,1-biphenyl
Fluorescent Brightener CBS-127
UVITEX FP
Optical Brightening Agent FP