婷婷丁香基地,欧美美女群交五月天,五月天欧美成人91综合视频网站,啊啊好爽黄视频韩国三级久久精品

Solenoid Valve vacuum pipe

Used in automobile engine exhaust system on the connection of the nylon tube location is set to match the rubber hose, there are two small pier section, by a raised design ensures that the pipeline sealing, improve the production efficiency.