The Pre-Shipment Inspection (PSI) is one of many types of quality control inspections conducted by Nanjing Tengda Machinery Co., Ltd.. This inspection is done according to standard QC Test, or based upon customer requirements. Samples are selected and inspected for defects at random, according to these standards and procedures. For us, Pre-Shipment Inspection is an important step in the quality control process and is the method for checking the quality of double screw extruder machine before they are shipped.

TENGDA has successfully established a large-scale factory to produce PET bottle flakes recycling in large quantities. Various in styles, TENGDA's Screen Changer System can meet the needs of different customers. The production of TENGDA double screw extruder machine adopts the high standard of workmanship. The comfy and stretchy fabric makes it suitable for those who are skin sensitive and it does not irritate their skins.

We have adopted the policies for sustainable resource utilization. We enhance the environmental management system constantly by determining, realizing and revising environmental goals periodically in order to meet the requirements of our environmental awareness.