I sit on both sides of this. I run an independent trade publication in a technical sector, which means I receive pitches, and I have also spent years pitching consumer and trade press for companies I worked at.
The two experiences have almost nothing in common, and most PR advice is written for the consumer case and then applied to trade, where it fails. Trade media is a genuinely different market with different economics, and understanding that's most of the work.
The economics that determine everything
A consumer publication needs volume. Its business depends on reaching a large audience, so it competes for attention, which means it wants novelty, conflict, and scale.
A trade publication needs credibility with a small, expert readership. My readers know the subject better than I do in their specific corner. If I publish something that's wrong or obviously promotional, I don't lose a few clicks, I lose the standing that makes the publication worth reading at all.
That single difference explains nearly every rejection. A pitch that would work at a consumer outlet, built on a big claim and a large number, is precisely the pitch a trade editor can't use, because their readers will immediately identify what's missing.
What I actually publish
Specific outcomes with the conditions attached. Not "our system improved efficiency." What system, at what site, measured how, compared against what, and what did not work. The caveats aren't a weakness in trade media, they're the credibility. A result with honest limits is publishable. A result without them reads as marketing regardless of whether it is true.
Things that went wrong. These are the most valuable and the rarest pitches I receive. A detailed account of a deployment that failed, and why, is worth more to my readers than five success stories, because everyone in the sector is quietly worried about the same failure. Almost nobody offers these, for obvious reasons, and the companies that do get remembered.
Practitioner explanations of something confusing. Where a standard is ambiguous, where two approaches are being argued about, where the vendor marketing has muddied a real distinction. Someone who can explain that clearly, without landing on their own product as the answer, is doing my readers a service and I will take it.
What gets deleted
Anything where the news is the company. A funding round, a partnership, a rebrand. These matter enormously to the company and almost not at all to a practitioner reader. If the pitch does not survive removing your company's name from the headline, it's not a story.
Claims with no method. A percentage improvement with no baseline, no measurement description, and no scope. My readers will ask all three questions and I won't have answers, so I don't publish it.
Contributed articles that are product documentation with the branding filed off. These are obvious from the second paragraph. The tell is that the piece describes a problem in exactly the shape of the author's solution.
Anyone who has clearly not read the publication. Trade beats are narrow. A pitch about an adjacent sector, or one that misunderstands what we cover, tells me nothing else in it was considered either.
The thing that works better than any pitch
Be useful first, with no ask attached.
The contributors I publish most started by answering a question. They saw something I had written that was imprecise and sent a correction. They responded to a request for context on a technical point. They forwarded a document that was relevant with no comment beyond "you might find this useful."
That builds something a pitch can't: I now know they understand the subject and are not primarily selling. When they eventually pitch, I read it differently, and the hit rate is far higher than cold outreach.
This is slow and it's why most PR programs will not do it. It's also why it works, since the difficulty is the entire barrier.
The practical version
If you have a company in a technical sector and want trade coverage, three things in order.
Read six months of the publication before writing anything. You will find the recurring questions the editor hasn't resolved. Answering one of those is a much stronger opening than announcing something about yourself.
Lead with the method, not the result. In trade, how you know is more interesting than what you found. A pitch that opens with an unusual measurement approach will get read even if the finding is modest.
Offer the uncomfortable version. If you have real data, including the part that didn't work, say so explicitly in the pitch. It's rare enough that it functions as a signal on its own, and it is the thing that converts a cold email into a conversation.
On the numbers
One specific piece of advice that applies to any technical publication: never send a figure you cannot fully source.
Trade editors check, and more importantly, readers check, and being caught once costs you the outlet permanently. If you have a real number, send the methodology with it unprompted. If you only have an estimate, label it as one. The instinct to round up and hope is the single fastest way to end a relationship with a publication that would otherwise have covered you for years.