Query (English)
"Can you recommend a Korean company that manufactures polyurea coating system products?"
Case #03 · Repeat Verification · ChatGPT 5.2
APTECH ranked #1 in ChatGPT's English polyurea response
APTECH was placed at rank #1 with a star emoji (⭐) in ChatGPT 5.2's response to an English query about Korean polyurea coating system manufacturers, ahead of Kukdo Chemical (Korean chemical conglomerate) at rank #2 and (주)폴리우레아 at rank #3. The ko.aptech-polyurethane.com source tag was attached three times inside the APTECH block, and APTECH appeared at the top of the Sources sidebar. This case reproduces the #1 citation pattern from December 2025 with a different prompt — a repeat verification across a two-month interval.
01 — Summary
English summary of the verified case
Ranking Result
ChatGPT placed APTECH at rank #1 with a star emoji (⭐), ahead of:
⭐ #2. Kukdo Chemical Co., Ltd. (Korean chemical conglomerate)
#3. (주)폴리우레아 (Polyurea Co.)
In the Summary Recommendation list at the bottom of the response, APTECH was again placed first.
Source Attribution
The ko.aptech-polyurethane.com source tag was attached three times within the APTECH block (company description, product lineup, headquarters location). APTECH also appeared at the top of the ChatGPT Sources sidebar, with the official domain and title "aptech - 폴리우레탄 전문 기업 | 우레아 코팅, 스프레이 폼" visible.
Repeat Verification
This case reproduces the #1 citation pattern from December 2025 with a different English prompt — a repeat verification across a two-month interval. The persistence of citation under varied query conditions supports the interpretation of relatively high reference priority (PVR — Persistent Visibility Rate) in ChatGPT's English response generation.
Read the verbatim ChatGPT response
and full analysis
The full Korean case page includes the verbatim ChatGPT response, source sidebar capture, fact-check notes, and competitor ranking table.
View Full Case (Verbatim Response)