欧美精品高清,国产日韩欧美亚洲精品95,国产日韩精品一区二区三区,97狠狠操,一级a片刺激高潮久久网,911av网站免费观看,黄色网站在线观看福利

　　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.