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  • Zhongtian pouring sealant is a composite modified material developed by our company. Ingredients include: high quality matrix asphalt, rubber powder, SBS, etc. Under normal temperature, it is a solid state, and it...

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    At present, the domestic belt product variety, is common but not strong bonding, the problem of shortage of the low temperature cracking resistance, resulting in the phenomenon such as fall off, craze, these pheno...

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    010-67893003
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  • 免费人成在线看视频,XXX免费国产在线视频,无码av永久免费专区,中文字幕无码亚洲一本大道在线

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