How We Got Here

Nan Ya Plastics, based in Taiwan and led by Margaret Wang, organizes a survey to determine if there is a market for its doors in the U.S.

Walter Wang proposes and supports Shirley Wang and Plastpro to lead the distribution of Nan Ya’s doors in the United States.

Plastpro attends its first National Sash & Door Jobbers Association trade show in Orlando,with a small booth and a single Nan Ya door.

Plastpro sells its first full container (568 doors)to Wheelers Building Materials in Rome, GA.

Therma-Tru, Plastpro’s largest fiberglass competitor, sues for patent infringement.

Plastpro introduces wood grain doors. — Establishes first warehouses in U.S.starting with Winnebago, MN, andGreen Cove Springs, FL.

Unlike many of our competitors, Plastpro’s fiberglass doors are engineered to stand the test of time with a high-performance, proprietary formula that resists the harshest elements and corrosive agents. Our doors require minimal maintenance—no splintering, denting, warping, rotting, or rusting. This outstanding durability not only extends the life cycle of each door but also reduces waste, conserves manufacturing resources, and lowers long-term maintenance costs.

Beyond performance, our fiberglass doors offer exceptional appearance and energy efficiency. With a wide range of panel configurations and unique grain options that can be painted or stained, Plastpro allows you to customize your door to fit your vision while enhancing the security and overall look of your home. We provide a cost-effective solution that never compromises on performance, style, or long-lasting value.

Builds the world’s first fully automated fiberglass door factory, a 250,000 square-foot facility in Ashtabula, Ohio.

So why is Plastpro’s manufacturing facility located in Ashtabula, Ohio? Ashtabula is historically known as the heart of the fiberglass industry. Since the 1950s, the region has been a key player in fiberglass production. In 1953, Chevrolet launched the iconic Corvette, featuring a body reinforced with molded fiberglass—manufactured right in Ashtabula. Since then, fiberglass products, from Corvettes to Mack Truck hoods, shower surrounds to bulletproof composite jackets, have been crafted in the area.

Given this longstanding expertise, it only made sense for Plastpro to establish its manufacturing plant in Ashtabula, where the most experienced fiberglass workers have lived and worked for decades. With a highly skilled workforce and a rich history of fiberglass innovation, Ashtabula provides the ideal environment for Plastpro to continue producing high-quality, durable fiberglass doors.

Sells its 1 millionth door in August.

Introduces HVHZ Impact SERIES.

Launches Fire Rated series and Trimmable doors.

Receives Crystal Achievement Award for its Trimmable fiberglass doors and named an industry innovator by Window and Door Magazine.

Sells its 2 millionth door in June.

The reputation for superior products in the industry is built on our commitment to quality, safety, and performance. Standards and testing are particularly crucial for fiberglass doors, as they must endure harsh weather conditions, provide security, and deliver long-lasting durability. That’s why every Plastpro door undergoes extensive research and testing to ensure it surpasses industry standards. We stay up to date with evolving building codes and partner with independent third parties to conduct rigorous testing.

Beyond just meeting these standards, we go above and beyond with our in-house testing, pushing our products to exceed safety, performance, and durability benchmarks. This comprehensive approach ensures our doors provide unmatched reliability, and our confidence in their quality allows us to offer warranties that reflect our dedication to customer satisfaction.

Completes 40,000-square-foot expansion of Ashtabula manufacturing plant.

Is listed as one of the “Top 100 Manufacturer” by Window andDoor for three consecutive years.

Launches Fire Rated series and Trimmable doors.

Receives Crystal Achievement Award for its Trimmable fiberglass doors and named an industry innovator by Window and Door Magazine.

Since day one, Plastpro has been pushing boundaries —expanding its reach by creating innovative products, bold designs, and smart services that not only keep up with market trends but anticipate what’s next. We are always forward-thinking, driven by the goal of not just staying ahead of the industry, but creating superior products that truly benefit consumers.

Every step forward is backed by a commitment to quality, durability, and the trust we’ve earned from our partners and customers over the years. As we continue to invest in the future, you can count on Plastpro to deliver what’s next—products that inspire confidence, exceed expectations, and set new standards in the industry. The next wave of innovation is on the horizon—backed by the Plastpro name you’ve come to rely on and trust.

Since day one, Plastpro has been pushing boundaries —expanding its reach by creating innovative products, bold designs, and smart services that not only keep up with market trends but anticipate what’s next. We are always forward-thinking, driven by the goal of not just staying ahead of the industry, but creating superior products that truly benefit consumers.

Every step forward is backed by a commitment to quality, durability, and the trust we’ve earned from our partners and customers over the years. As we continue to invest in the future, you can count on Plastpro to deliver what’s next—products that inspire confidence, exceed expectations, and set new standards in the industry. The next wave of innovation is on the horizon—backed by the Plastpro name you’ve come to rely on and trust.

Plastpro Inc. celebrates 30 years of innovation and leadership in fiberglass door manufacturing.

In 2024, Plastpro grew from 260,000 to 1.2 million sq. ft. of manufacturing space in Ashtabula, Ohio.