The idling, designs specially uses in each kind of type drainage opening, the second quality item stave recycling use which the stave injection molding machine produces.

Through this planning thinking will effectively and reasonably combine the opening of the new water resource with urban drainage and water-logging as well the urban blowdown.

Peripheral laser iridotomy involves creating an opening in the iris tissue to allow drainage of fluid from the posterior chamber to the anterior chamber and vice versa.