Pro-Tech has grown to be the leader in the heat treating, steel producing, lime producing, cement producing and power generation industries.
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The Prototech Co. annual revenue was $9.4 million in 2026.
Prototech Co. is based in Downers Grove, Illinois.
The NAICS codes for Prototech Co. are [33, 3328, 332].
The SIC codes for Prototech Co. are [33, 339].