- 24
- Jan
as folding fire door,fire rated folding doors,36 fire rated door
The steel fire door is filled with fireproof material, and its outer surface must be sprayed to achieve a uniform color standard. Steel fire doors all require a smooth appearance, and electrostatic spraying achieves this. The sprayed layer has good appearance quality, good adhesion, and short construction to forming time, which greatly reduces the construction period and labor intensity.
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