久久精品国产字幕高潮,日本一上一下爱爱免费,国产亚洲3p无码一区二区 ,久久久精品波多野结衣AV

Insulation reversing valve

PRODUCTS > Melamine is special > Insulation reversing valve

Insulation reversing valve

Patent No: ZL 2011 10413378.0 ZL 2011 20516198.0
Insulation reversing valve is a special valve designed for melamine process system, which needs multi-way switching, insulation operation and preventing crystallization.
The valve is equipped with an insulating jacket, which uses high temperature gas to insulate the valve.




广宗县| 敦煌市| 阿荣旗| 桓台县| 广安市| 梁河县| 临夏县| 中超| 社旗县| 兴海县|