Glass & Ceramics Companies Ranked by Operating Margin (FY2026, 17 companies)

1. 1
   
   MARUWA534433.5%33.5%¥74.5B+17.3%
2. 2
   
   Fujimi538419.9%19.9%¥69.4B+29.5%
3. 3
   
   Niterra533418.9%18.9%¥731.2B+8.8%
4. 4
   
   Nittobo311017.6%17.6%¥118.2B+60.8%
5. 5
   
   Nichias539314.7%14.7%¥251.9B+72.0%
6. 6
   
   Toyo Tanso531014.6%14.6%¥46.2B+40.3%
7. 7
   
   NGK Insulators533313.1%13.1%¥619.5B+77.0%
8. 8
   
   Nippon Carbon530212.7%12.7%¥37.7B+12.6%
9. 9
   
   NEG521411.0%11.0%¥311.4B−4.2%
10. 10
    
    Taiheiyo Cement52338.3%8.3%¥898.4B+1.0%
11. 11
    
    Tokai Carbon53018.0%8.0%¥323.0B+86.4%
12. 12
    
    Noritake53317.8%7.8%¥142.9B+33.2%
13. 13
    
    Shinagawa Refractories53517.7%7.7%¥177.7B+3.2%
14. 14
    
    TOTO53327.3%7.3%¥737.4B+46.5%
15. 15
    
    Nippon Hume52626.3%6.3%¥40.2B−34.1%
16. 16
    
    AGC52016.2%6.2%¥2.1T+12.4%
17. 17
    
    Sumitomo Osaka Cement52326.1%6.1%¥223.7B+37.0%

Shares 1Y is a closing-price reference (vs. about a year earlier).

Revenue and operating profit are from the latest full-year consolidated results. Average salary is for the reporting entity per its annual securities report; pure holding companies with fewer than 50 staff are excluded.