Formosa Plastics Group*


Headquarters: Taipei, Taiwan.

Product Lines: Fiberglass entry doors and composite frames. Fiberglass patio door systems. Vinyl window and door systems.

Web Sites:,

2013 Top 100 Sales Range Category: More than $1 Billion

General Information: Plastpro Inc., the manufacturer of fiberglass entry doors, and Neuma Doors, a producer of fiberglass patio door systems, are both affiliated with the Taiwan-based Formosa Plastics Group, one of the largest producers of petrochemicals and plastic products in the world, with annual sales of approximately $75 billion and 100,000 employees.

Launched in the U.S. in 1994, Plastpro operates a 250,000-square-foot automated door manufacturing facility in Ashtabula, Ohio. Representing a $35 million investment, the facility has the capacity to produce 1 million slabs a year, enabling the manufacturer to serve some of the country’s largest building product distributors and retailers. In recent years, Plastpro has expanded its offerings beyond entry doors to include PF Frames composite door jambs and PVC wainscott and trim board.

Headquartered in Los Angeles, Plastpro is an affiliate company of JM Eagle, the PVC pipe producer. Walter Wang, Plastpro chairman, who serves on Formosa’s board, owns JM Eagle. Neuma Doors, which produces fiberglass patio door systems at a plant in Houston, Texas, is part of Formosa’s Nan Ya Plastics Corp., which produces window and door frames and fiberglass products for numerous markets worldwide. In Canada, Nan Ya door products are distributed by Richersons Enterprise Ltd. The Formosa Plastics Group also has numerous chemical and manufacturing operations in the U.S., including PVC resin plants in Texas and Louisiana.


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*Sales information not confirmed by company