Handle materials are zinc alloy, copper, aluminum, stainless steel, stainless steel, etc. In order to form a complete set with various styles of furniture, the shape and color of handle are various and colorful. The handle after electroplating and electrostatic spray painting has the function of wear resistance and corrosion resistance. In addition to being consistent with the decoration style of the room, it should also be able to bear a larger tensile force. Generally, the handle should be able to bear a tensile force of more than 6kg. Handle locks are generally made of copper, stainless steel, alloy and other materials. Door and window handles can be divided into three categories: 1. Multi point lock handle. 2. Spinning handle (seven character handle). 3. Linkage handle of external casement window. Among them, multi-point lock handle is the most common and widely used. Scope of application: all inside and outside casement windows, indoor sliding doors and hanging windows on curtain walls in home, office and business buildings. Multi point lock handle can be subdivided into: A, fork handle. B. Square shaft handle. C. Two sided handle.