1, Look at the rod to see whether the appearance of scars, or scratches.
2, The rod's paint surface is not uniform, glass drying rods should pay special attention to, whether there is the phenomenon of air bubbles. Carbon rods are easy to paint Carbon rods are prone to paint falling off and leaving scars.
3, The rod will be straight, see whether the rod is straight, There are rods to the head of the rod slightly part of the head has become curved.
4, Look at the rod each - - interface of the rod wall thickness is uniform.
5, For Each section of the pull back to see the inner wall workmanship, look at wooden scars, even a little bit of scarring will affect the entire rod in the The force of the rod will be affected.