Henrico-based manufacturer Alchemco recently acquired Tech-Crete LLC, a North Dakota manufacturer. Alchemco makes products used to clean, repair, protect, and waterproof concrete and masonry structures Tech-Crete LLC was the creation of Curtis Nelson, a chemist and Korean War veteran who formed it in the 1970s. "Tech-Crete's unique & innovative biochemical waterproofing technology is a great addition to our portfolio" said […]
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