Tianjin HENGRUI Plastic Machinery Co., Ltd. (hereinafter referred to as HENGRUI), founded in 1994. It is a private stock enterprise, locates in Beichen Hi-Tech Industrial Park, Tianjin, and covers an area of 14,000 square meters. 50% employees have been working in HENGRUI more than 10 years. They are full of experience and responsible. And they are the foundation of fine work and good quality. Credibility and integrity are our principles. There are 2 main products One is used in the thermoforming packaging industry The other is in industrial manufacturing industry Thickness: 0.02-30mm; width: ≥3m. The sheet and film are mainly used to food packaging, industrial packaging, stationary, and electronics industry. The thicker sheet lines are mainly used to household electrical appliances, furniture, auto, building, chemical industry and etc. Since 1994, HENGRUI focus on research and manufacture of middle-high plastic extrusion machinery, and has been ahead of Chinese market. The related manufacturng parts, match kits and electrical control have been used for many years, which will guarantee HENGRUI MACHINES much more steadily, reliably, and with longer service life. The success ratio of HENGRUI machines could be 90%. Even if continuous operation, low fault. 30%-40% exported to Taiwan, Japan, Sweden, UK, Germany, Russia, Indonesia, Sri Lanka, Malaysia. At present, more and more PET plastic sheets are applied in the Chinese packaging market. The processing methods have been developed from pre-drying to non-drying for many years. Without pre-drying, co-rotating twin-screw extruders are mostly used. For twin-screw extruders, there are a certain of advantages for plasticization and devolatilization, but because the PET materials contain water, the viscosity decreases due to the large shear during the plasticization process, and the strength of the sheet is reduced. In addition, the extrusion pressure of the twin screw is low due to the large amount of recycled materials, it is not good for the material to filter impurities. Tianjin Hengrui has launched a single screw and planetary section extruder for the extrusion of PET materials. The extruder has low shear plasticization, easy devolatilization, high extrusion pressure, etc. The advantage point plays a positive role in reducing the viscosity drop and maintaining the strength of the sheet. With the development of technology, HENGRUI has launched a large-scale multi-layer co-extrusion high-barrier plastic sheet production line, which is used to produce high-barrier containers in line with thermoforming machine, and online crushers, in addition to the production coils. It is particularly worth mentioning that a number of large-scale multi-layer co-extrusion high-barrier plastic sheet production lines with an output of 1.3 tons per hour manufactured for OTOR are connected to the large-scale thermoforming machine of the German ILLIG company.