POTOP Co.,Ltd. (referred to as POTOP ) was established in 2009. It is a company engaged in the manufacturing of polymer rheological performance characterization instruments, polymer processing and forming experimental equipment, and the development of new forming research and trial equipment for functional films. POTOP has a wide range of products, including a full series of polymer experimental instruments and equipment. In the category of rheological performance characterization, there are torque rheometers, extrusion capillary rheometers, and pressure filtration value testers. In the processing and forming experimental category, there are desktop small precision calendering machines, desktop small precision rolling machines, desktop small precision blow film machines, small precision multi-layer co-extrusion blow film machines, small precision multi-layer co-extrusion calendering machines, small precision multi-layer co-extrusion rolling machines, small precision multi-layer in-mo