YOW CHERN CO., LTD.  

☆New Screw AnchorApplication Case No. Taiwan:  096204260U.S.A: 11/723.783Europe: 07104804.5China: 200720006656.X ◆Bigger pitch can enhance pull out value ◆Smaller helical angle can save labor while screwing ◆Smaller helical angle is relative to lower resistance so it can achieve tight grip ◆Single thread with the bigger pitch is good for high pull out value ◆Smaller helical angle is better for high grip preload◆2~3 lead threads are easy to screw-in at the first insertion time. It avoids spinning, unbalancing, and reaming☆New Wedge Anchor Application Case No. Taiwan:  226606U.S.A: 6,524,046 B2Europe: 1 243 801 B1Pos. 1 => Produce special sleeve track. Surface is smooth and splendid by cold forging in order to make sleeve fully expanded.Pos. 2 => Three ribs are able to grip sleeve tightly so the bolt will not spin in order to achieve 100% expansion.Pos. 3 => Special points are helpful to grip concrete and have the minimum resistance while anchor is inserted into hole.Pos. 4 => Due to high technology by cold forging, bolt and sleeve completely match. While anchor is drove into hole, sleeve will not become deformed.Pos. 5 => For dog point with bit chamfer, it`s unlikely to change shape and nut is dropped out easily while hammering.