Core Viewpoint - The article emphasizes the importance of moisture control in the plastic processing industry, particularly for engineering plastics like polyamide (PA) and polyethylene terephthalate (PET), to ensure high-quality products and prevent defects during production [1][3]. Group 1: Moisture Control in Plastic Processing - Moisture content in plastic materials must be strictly controlled, with most engineering plastics requiring levels below a certain maximum value [1]. - The moisture absorption rate varies by plastic type, with PET capable of absorbing moisture exceeding the maximum allowable value of 0.02% within just 10 minutes under adverse conditions [3]. - High-quality plastic products necessitate rapid, accurate, and strict monitoring of moisture content from the plastic pellets to ensure consistent drying and injection molding quality [3]. Group 2: Measurement Methods - The Karl Fischer moisture determination method is a standard method known for its high precision but faces challenges in high-speed production environments due to its slower detection speed and the requirement for operators to have a chemical background [3]. - The ASTM D6980-12 standard has introduced the halogen moisture analyzer as a practical solution for moisture measurement in plastic production, allowing for accurate results without complex equipment or expensive reagents [4][5]. - The halogen moisture analyzer method has been validated against the Karl Fischer method, demonstrating its effectiveness for various commonly used plastic pellets [7]. Group 3: Company Overview - Mettler Toledo is a leading manufacturer and service provider of precision instruments and weighing equipment, applicable in laboratories, manufacturing, and retail services [17][18]. - The company has established manufacturing bases and R&D centers in Shanghai, Changzhou, and Chengdu, supported by a nationwide sales and service network [19][20]. - Mettler Toledo employs approximately 18,000 staff and reported revenues of 3.9 billion USD, with operations in 40 countries/regions [25].