William - Mills

: In the industry, "solid" often refers to Solid Bleached Sulfate (SBS) , a premium paperboard grade. Williams Paper Co. explicitly works with prime SBS vendors to serve the Midwestern U.S. market. Other Possible References

: They maintain solid long-term relationships with board mills to source materials for their customers. The company operates precision sheeters to convert paper and paperboard for the commercial printing and folding carton industries. william mills

The phrase "William Mills — solid paper" most likely refers to the , a long-standing family-owned business established in 1861 that specializes in paper and paperboard converting services. Key Contexts : In the industry, "solid" often refers to