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OPTECH Nondestructive Testing – Tutorials for Non Destructive Testing — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Mechanical And Industrial Engineering Industry →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
crystalcleartesting.com ↗	71 match 1 shared topics	Crystal Clear Testing - Non Destructive Testing NDT in Alberta	CA~ en	mechanical-and-industrial-engineering-industry WordPress	robotsllmsaihumans	emailphone	none
accelnde.com ↗	70 match 1 shared topics	Stasuk Testing & Inspection Ltd. - Nondestructive and Materials Testing	en	mechanical-and-industrial-engineering-industry	robotsllmsaihumans	emailphone	none
axiomnde.com ↗	69 match 1 shared topics	Nondestructive Testing Company in Conroe, TX	US~ en	mechanical-and-industrial-engineering-industry WordPress	robotsllmsaihumans	email phone	none
rotechlabs.co.uk ↗	69 match 1 shared topics	Destructive Testing Services (DT)	GB en	mechanical-and-industrial-engineering-industry WordPress	robotsllmsaihumans	email phone	none
pipewallyield.com ↗	67 match 1 shared topics	The Pioneer in Nondestructive Tensile & Fracture Toughness Testing \| ABI Technology	US~ en	mechanical-and-industrial-engineering-industry	robots llmsaihumans	emailphone	none
usndti.com ↗	67 match 1 shared topics	USNDT \| Advanced Instrumentation & Non-Destructive Testing Equipment	en	mechanical-and-industrial-engineering-industry WordPress WooCommerce	robots llmsaihumans	emailphone	none
usindt.com ↗	67 match 1 shared topics	U.S. Inspection & NDT - Inspection and Non-Destructive Testing	en	mechanical-and-industrial-engineering-industry WordPress WooCommerce	robotsllmsaihumans	email phone	none
uv-ndt.com ↗	66 match 1 shared topics	U&V NDT Inspections and consultancy services Inc – Advanced Non-Destructive Testing & Inspection Solutions	en	mechanical-and-industrial-engineering-industry WordPress WooCommerce	robotsllmsaihumans	emailphone	none
axialextensometer.com ↗	65 match 1 shared topics	Extensometers for Materials Testing \| Reliant Technology	US~ en	mechanical-and-industrial-engineering-industry	robotsllmsaihumans	emailphone	none
upi-laboratories.com ↗	65 match 1 shared topics	UPI Laboratories \| Innovative Solutions for Precise Testing	en	mechanical-and-industrial-engineering-industry WordPress	robots llmsaihumans	email phone	none
bcomtesting.com ↗	65 match 1 shared topics	Bcomtesting \| Testing \| Wake Forest, North Carolina	US~ en	mechanical-and-industrial-engineering-industry WordPress	robotsllmsaihumans	email phone	none
ustanktechinc.com ↗	64 match 1 shared topics	US Tank Tech Inc. – Underground Storage Tank Testing, Tank Scans/Sweeps and Cathodic Anode Testing	en	mechanical-and-industrial-engineering-industry WordPress WooCommerce	robotsllmsaihumans	emailphone	none
appliedrelaytesting.co.uk ↗	64 match 1 shared topics	Relay Testing Solutions & Equipment \| Applied Relay Testing	GB en	mechanical-and-industrial-engineering-industry WordPress WooCommerce	robotsllmsaihumans	emailphone	none
4dtestingsolutions.com ↗	64 match 1 shared topics	Durability Testing Your Product Packaging - 4D Testing Solutions	en	mechanical-and-industrial-engineering-industry WordPress	robotsllmsaihumans	email phone	none
cambs-pat.co.uk ↗	64 match 1 shared topics	Cambs PAT – Portable Appliance Testing	GB en	mechanical-and-industrial-engineering-industry WordPress	robotsllmsaihumans	emailphone	none
utscanada.com ↗	64 match 1 shared topics	Home - United Testing Systems Canada Ltd.: Materials Testing Machines, for Tension, Compression, Flexural, Hardness, Torsion	en	mechanical-and-industrial-engineering-industry	robotsllmsaihumans	emailphone	none
zwick-academia-day.com ↗	64 match 1 shared topics	ZwickRoell Materials Testing \| ZwickRoell	en	mechanical-and-industrial-engineering-industry TYPO3	robotsllmsaihumans	emailphone	none
zwickusa.com ↗	64 match 1 shared topics	ZwickRoell Materials Testing \| ZwickRoell	en	mechanical-and-industrial-engineering-industry TYPO3	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.