Preforms are usually used for the manufacture of PET products. Preform molds are designed and constructed based on the volume of the final product, and the shape and size of bottles. The type and dimensions of caps used in the final product are then predicted in the design of preforms. Given the key role of preforms in the manufacture of PET bottles, the product quality is mainly dependent on the preform quality and design. Utilizing the most advanced machinery and devices, Sepehr Plastic Co. produces and provides industrialists with various kinds of high-quality preforms of different colors and weights in Zanjan Noavaran Industrial Estate.