人妻熟妇少又伦精品视频,玖玖伊人色,天天做,天天射,韩日,www.色视频,四虎成人www国产精品,69av在线,色就是色,欧洲色图

LNR horizontal force dispersible rubber bearing

It is used under 7 degrees of seismic intensity in highways and m...

JQZ spherical steel bearing

This kind of product is used in all kinds of bridges in highways,...

Hydrophilic expansion rubber

This kind of product includes:PZ and PN types.We can provide produc...

Road waterstop

This kind of product includes:rubber waterstop,hydrophilic expansion rubber,steel-edged rubber,etc..

Geomembrane

This kind of product includes:polyethylene geomembrane of low density...

Steel and combing plate-assembly expansion joints

This kind of product is comprised of steels and combing plates.It ...

Ⅲa Rubber pad

This kind of product is suitable for II type fastener in 60kg/m r...

Combing plate expansion joints

This kind of product is comprised of combing plates,stainless steels...

Ⅲb Rubber pad

This kind of product is suitable for III type fastener.Products refer to :TB/T 2626-1995 Railway industry standard.

Unit sparse plate bridge expansion joint for multi-direction-displacement

This kind of product can meet the need of rotation and the displa...

FPQZ spherical steel bearing with friction pendulum

The product is used in highways and all kinds of urban bridges,esp...

60-10-17 Rubber pad

This kind of product is suitable for I type fastener in 60kg/m ra...

Elastic limiter for passenger railway

This kind of product is installed between the continuous plate and...

Geononwoven and geomembrane

This kind of product includes:one geononwoven and one geomembrance,mo...

GCQZ series spherical bearing

The product is used in highways and all kinds of urban bridges. P...