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Click on Producer/Supplier name for a complete list of products each principal supplier offers through Harwick Standard Distribution Corporation.

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Carbon Blacks

N110, N120, N121, N134, N220, N231, N234, N299, N326, N330, N339, N343, N347, N351, N358, N550, N650, N660, N762, N772, N774

Sid Richardson


Air-Floated Hard Clays

Champion® & Natka® Clays

Southeastern Clay


Soft Clays

GK 990, GK995, GK997

M&M Clays

Clays-Calcinated,WaterWashed,
Surface Modified

GK Series


Precipitated Silicas

Highly Reinforcing Grades:
Hi-Sil® 180HM, 190G, 900, 915

Reinforcing Grades: Hi-Sil® 210, 233, 243 LD

Semi-Reinforcing Grades:
Hi-Sil® 532 EP, Silene® 732D

Surface Treated Grades:
Ciptane® I (Hi-Sil 210-base) , LP
 

PPG Industries


Amorphous Semi-Reinforcing Grade:

Silica S

Harwick Standard


Santoweb® Series (Treated Cellulose Fiber)

Flexsys America


Solka-Floc® (Fine Cellulose Filler)

International Fiber


Ground Coal
Austin Black 325

Coal Fillers

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The registration marks above are owned by the principal/suppliers listed in association with them.