你懂得福利导航_婷婷福利视频导航_超碰A级片_日韩一类毛片_爱av在线_A片影音

你懂得福利导航_婷婷福利视频导航_超碰A级片_日韩一类毛片_爱av在线_A片影音

你懂得福利导航_婷婷福利视频导航_超碰A级片_日韩一类毛片_爱av在线_A片影音

Maintenance of Support

In order to make the friction stay in the best working condition or longer working life, we need to maintain it at terms:

Cleanning:

The surface of friction stay should be cleared often, but not use the strongly corrosive solvent.

Fixing the bolt:

Please use the relative tool to fix the loosed screw.

Lubrication:

All moving and fricting parts of the friction stay , should use lubricationg oil or other lubricant , only the place of the sliding plate and track is not included , because of their own-lubrication.

Adjust the postion

If the window could not use conviniently , or the sealing property is not good and so on , please kindly consult to our engineers before and taking the related steps.

你懂得福利导航_婷婷福利视频导航_超碰A级片_日韩一类毛片_爱av在线_A片影音
日本成人A V电影| AV乱操| 91剧场′黄色| 操逼无码| 成人一级无码毛骗电影| 超碰97大香蕉| 久草成人网| 日本黄在免g| 91人成网| 97干97色| 午夜久草| 。日韩一区性爱| 日韩A V在线电影| 四十路无码| 人人摸人人干人人操| 另类激情四射| 高清无码日韩黄色正片| 华女与黑人91A∨| 日韩一级性爱AV| 无码一区二区不卡| 日韩美视频| 日本色色天堂X X| 亚洲色图av在线| 香交视频一级A片| 三级无码A片| AV色在线| 亚洲AV无码免费| 黄色毛片a片熟女| 永久AV免费网站| 不卡七区| 91看片色情A片| 成人黄色电影五月天| 免费AV不卡| 在线免费看AV| 一级黄色片网站| 成人AV黄色网| 韩日av无码久久| 性 无码| 国产色情AV| 请收一下一级免费毛片。| 国产 性爱 在线|