combind steel spacer bars
2022-04
Yonghui compound series excellent flame retardant, anti-condensation, anti-uv performance

◆ Yonghui compound series excellent flame retardant, anti-condensation, anti-uv performance
◆Yonghui compound series low thermal conductivity achieve excellent heat insulation performance
◆ Yonghui compound series of efficient sound insulation and noise reduction performance
◆ Beautiful visual effect of Yonghui compound series
◆ Yonghui compound series green energy saving
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