HIgh quality of permeable cement sealer brand needed

Permeable cement sealer brand needed!
When my studio structure was built 13 years ago the contractors used a product to seal the cement on an open back porch. This porch has a roof overhang but is open to the elements.
The finish was a low gloss that made the cement porch floor look rich, darker and beautiful as well as protected it. The "sealant" lasted for many years. About 5 years ago I noticed the edges of the porch cement are starting to crumble a little. So I decided to seal it again to protect it. When I tried to find the same brand a few years ago to reseal the cement again I was not able find the same brand. So I compromised and used a Menard's brand and the shine and glossy look lasted less than a season. It's a lot of work to empty, clean and then seal a large cement porch for just one season so this cheaper brand was very disappointing.
Contractors... what long lasting, high-quality brand of permeable cement sealant would you recommend and where can I find it? I live in a rural area but have access to a high quality lumber company and am an hour's drive from Lowes and Home Depot?
After the surface has been resealed.
The locally found sealer I used but was not happy with...
The dry cement and the new surface resealent.
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