YIH SHWEI BOLT INDUSTRIAL CO., LTD.
|YIH SHWEI BOLT INDUSTRIAL CO., LTD. Patent applications|
|Patent application number||Title||Published|
|20130022426||SCREW - A screw includes a head and a shank combined together. The head is formed with a circumference provided thereon with continuously arranged point-shaped ribs. When the circumference of the head is being locked into a wood piece, the ribs will function to carry out excavating to enable the screw to be locked into the wood piece comparatively easily.||01-24-2013|