亚洲国产欧美另类_外围国产视频大全_国产网红AV无码_偷拍免费公开视频_偷拍免费公开视频_国模一区二区欣赏_精品国产日本久久_伊人亚洲无码AV

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.