Overview
JavaScript leads Plastics & Polymers's secondary barrier stack above the norm
| Value | |
|---|---|
| WAF | 98% |
| Antibot | 10% |
| CAPTCHA | 29% |
| JavaScript | 34% |
| Rate Limiting | 13% |
| TLS | 10% |
WAF at 98% is the dominant barrier. JavaScript (34%) leads secondary coverage. The remaining barriers sit materially lower, giving Plastics & Polymers a narrow but defined secondary layer.
Barrier Landscape
WAF leads Plastics & Polymers at 98% — JavaScript is the main secondary layer
| Value | |
|---|---|
| WAF | 98% |
| Antibot | 10% |
| CAPTCHA | 29% |
| JavaScript | 34% |
| Rate Limiting | 13% |
| TLS | 10% |
| Has robots.txt | 80% |
| Blocks AI crawlers | 4% |
WAF dominates at 98%. JavaScript (34%) leads active secondary barriers, followed by CAPTCHA (29%). The remaining three barriers all sit at or below 13% — a concentrated rather than broadly stacked profile.
Single-barrier configurations dominate Plastics & Polymers — mostly WAF alone
| % of sites | |
|---|---|
| 0 barriers | 2% |
| 1 barrier | 42% |
| 2 barriers | 33% |
| 3 barriers | 13% |
| 4 barriers | 3% |
| 5 barriers | 7% |
| 6 barriers | 0% |
42% of Plastics & Polymers sites carry exactly one barrier — almost always WAF. Two-barrier stacks add 33%. Just 23% of sites layer three or more defences.
Plastics & Polymers sites are predominantly Simple to access
| Mean recommended tier | |
|---|---|
| All sites | 1.28 |
A mean recommended tier of 1.28 and a median of Simple place Plastics & Polymers among the most accessible sectors surveyed. 79% of sites are Simple to access; 5% require Moderate or above.
Simple tier covers more than three-quarters of Plastics & Polymers sites
| % of sites | |
|---|---|
| 1 - Simple | 79% |
| 2 - Easy | 16% |
| 3 - Moderate | 4% |
| 4 - Complex | 0% |
| 5 - Advanced | 1% |
Simple (79%) is the most common tier. Simple and Easy together account for 95% of sites, while 4% land at Moderate and 1% at Complex or Advanced.
robots.txt
Nearly four in five of Plastics & Polymers sites publish a robots.txt
| % of sites | |
|---|---|
| Publish a valid robots.txt | 80% |
80% of Plastics & Polymers sites have a valid robots.txt. The remaining 20% leave crawl policy entirely undefined — a meaningful gap for a sector of this scale.
Plastics & Polymers sites name a handful of agents in robots.txt — few commit to comprehensive policies
| % of sites | |
|---|---|
| 0 | 32% |
| 1 | 46% |
| 2–4 | 9% |
| 5–9 | 8% |
| 10–15 | 0% |
| 16+ | 5% |
The mean of 2.5 named agents reflects limited bot-policy investment in Plastics & Polymers. 32% of sites name no agents; 46% name exactly one. Only 5% maintain a list of 16 or more named bots.
SEO audit tools and SEO / search indexing draw near-equal attention in Plastics & Polymers robots.txt
| % of sites | |
|---|---|
| AI crawlers | 6% |
| SEO / search indexing | 8% |
| SEO audit tools | 9% |
| Commercial scrapers | 0% |
| Social / content scrapers | 0% |
| Archive / research crawlers | 1% |
| Monitoring / uptime bots | 0% |
SEO audit tools appears in 9% of Plastics & Polymers sites; SEO / search indexing in 8%. The near-equal split reflects a sector that treats both categories with comparable priority. Figures are percentages of all 100 sites.
Uniform per-agent rules dominate Plastics & Polymers robots.txt files
| % of sites | |
|---|---|
| Uniform per-agent rules | 50% |
| Path-level mixed rules | 25% |
| Allow-only (no Disallow rules) | 5% |
| Mixed AI posture | 0% |
| Blanket Disallow: / | 0% |
Uniform per-agent rules lead at 50%, with path-level mixed rules at 25%. Mixed AI posture (0%) and blanket Disallow (0%) are minimal.
AhrefsBot leads named Disallow rules in Plastics & Polymers robots.txt
| Disallowed | Allowed (whitelisted) | |
|---|---|---|
| * | 62% | 29% |
| AhrefsBot | 8% | — |
| Screaming Frog SEO Spider | 4% | 2% |
| Baiduspider | 5% | — |
| DataForSeoBot | 5% | — |
| Yandex | 5% | — |
| turnitinbot | 5% | — |
| GPTBot | 3% | 2% |
| 360Spider | 4% | — |
| 360Spider-Image | 4% | — |
| 360Spider-Video | 4% | — |
| BLEXBot | 4% | — |
| BacklinkCrawler | 4% | — |
| Baiduspider-image | 4% | — |
| Baiduspider-news | 4% | — |
| Baiduspider-video | 4% | — |
| MJ12bot | 4% | — |
| SEOkicks-Robot | 4% | — |
| SearchmetricsBot | 4% | — |
| SeekportBot | 4% | — |
| SemrushBot | 4% | — |
| Sogou | 4% | — |
| Sogou-Image | 4% | — |
| Sogou-Video | 4% | — |
| SputnikBot | 4% | — |
Values are percentages of all 100 Plastics & Polymers sites surveyed. The wildcard (*) leads at 62% Disallow. Among named agents, AhrefsBot, Baiduspider, DataForSeoBot are the most frequently targeted — focused on non-AI crawlers.
Industry Cohort
Plastics & Polymers sits mid-table within the Manufacturing & Logistics cohort
| WAF | Antibot | CAPTCHA | JavaScript | Rate Limit | TLS | robots.txt | Blocks AI | Tier | |
|---|---|---|---|---|---|---|---|---|---|
| Aerospace & Defense | 87% | 17% | 26% | 36% | 21% | 15% | 67% | 6% | Tier 1 |
| Chemicals | 83% | 8% | 19% | 31% | 7% | 8% | 71% | 8% | Tier 1 |
| Civil Engineering | 89% | 13% | 22% | 38% | 19% | 14% | 60% | 5% | Tier 1 |
| Import & Export | 93% | 19% | 17% | 35% | 17% | 13% | 69% | 6% | Tier 1 |
| Machinery | 91% | 13% | 17% | 49% | 20% | 15% | 80% | 10% | Tier 2 |
| Mail & Package Delivery | 91% | 15% | 19% | 37% | 17% | 15% | 70% | 3% | Tier 1 |
| Manufacturing | 92% | 20% | 19% | 45% | 24% | 18% | 75% | 9% | Tier 2 |
| Maritime | 87% | 22% | 24% | 41% | 19% | 12% | 62% | 8% | Tier 1 |
| Metals & Mining | 87% | 26% | 30% | 39% | 25% | 16% | 72% | 4% | Tier 1 |
| Plastics & Polymers | 98% | 10% | 29% | 34% | 13% | 10% | 80% | 4% | Tier 1 |
| Transportation & Logistics | 78% | 15% | 16% | 35% | 17% | 18% | 67% | 2% | Tier 1 |
| Warehousing | 98% | 18% | 27% | 38% | 22% | 8% | 75% | 4% | Tier 1 |
Across Manufacturing & Logistics, Plastics & Polymers's barrier rates are broadly in line with peers. WAF at 98%, JavaScript at 34%, and AI blocking at 4% all sit near the cohort median. Tier difficulty (mean 1.26) is above the group average.