国产精品免费看久久久无码,亚洲国产精品一区二区久久,野狼av午夜福利在线,性做爰片免费视频毛片中文

　　Product type: hot melt adhesive

　　Implementation standard: SY/T4054-2003

　　Main performance: excellent tensile strength and strong bonding performance, can effectively resist the soil stress, external impact and thermal expansion,

　　prevent the corrosion layer deformation and stripping, greatly prolong the anticorrosion life of the protected body.

　　Scope of application: long distance buried steel pipeline, oil storage tank, old pipeline maintenance, repair and pipeline interface corrosion prevention.

　　Product advantages:

　　1. Excellent wear resistance;

　　2. Acid, alkali, salt resistance;

　　3. Prevent the invasion of moisture and corrosion.