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Jiangsu Hilong Technology
Nuclear-grade and commercial firestop sealing materials, UL-listed.
Top companies · September 2026
Jiangsu Hilong (江苏海龙核科技股份) manufactures firestop sealants, planks, modules and cable transit devices from Zhenjiang, a range originally developed to localise nuclear-grade penetration seals for the Tianwan nuclear station. Its FS and FB product family is UL Listed under file R40996 in category XHHW, Fill, Void or Cavity Materials, assessed to ANSI/UL 1479 and UL 2079, and it publishes the associated UL through-penetration systems W-J-3280 and W-J-3281 and joint systems FF-S-1052 and FW-S-1029. It holds qualified-supplier status with CNNC for nuclear island work and also produces steel-structure fireproof coatings. UL registers the company under the alternative English rendering Jiangsu Haicore Technology.
- Transport
- Energy & utilities
- Data centres
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Energy & utilities
Qinshan Nuclear Power Plant
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Energy & utilities
Daya Bay Nuclear Power Plant
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Energy & utilities
Ling'ao Nuclear Power Station
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Energy & utilities
Hongyanhe Nuclear Power Plant
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Energy & utilities
Yangjiang Nuclear Power Station
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Energy & utilities
Taishan Nuclear Power Plant
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Projects as published on Jiangsu Hilong Technology's own website.
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Head office and works
Zhenjiang, Jiangsu
More fire safety companies in Zhenjiang →
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