Quality

Quality control

As one of the drafters of the national standards paper bag industry, Nanwang boasts industry-leading laboratories in its field. We have implemented internal quality control standards, including thorough audits of suppliers, testing of raw materials, and strict control over the production process. We have also set up a comprehensive traceability system for our products, which allows us to complete quality tracing within just 2 hours.

Testing of raw materials

Physical indicators: Quantification, odor, folding strength, bursting strength, stiffness, tensile strength, tear strength, smoothness, whiteness, opacity, paper dust, thickness, moisture, water absorption (COBB), fat acid resistance (the KIT method and hot oil test), etc.

Food safety indicators: Fluorescent substances, consumption of potassium permanganate, heavy metal (calculated by Pb), arsenic, formaldehyde, overall migration, microorganisms (3 items), etc.
Ink testing: Color, odor, PH value, heavy metals (multiple elements), etc.

Sealant testing: Viscosity, solid content, heavy metals (multiple elements), etc.

Product Manufacturing Control

In the production process of eco-friendly paper bags, 14 types of inspections are required:

Dry rub resistance test of printing ink,Oil rub resistance test of printing ink,Drop test,Static Weight Bearing Test,Dynamic lifting test,Handle pull test,Swing test,High and low-temperature resistance test,Grease resistance test,Fluorescent substance test,Seal adhesion strength test,Basis weight detection,Dimensional measurement,Adhesive bonding strength test. To complete the above inspections, we need to invest at least 660 paper bags per day.

Static Weight Bearing Test	Handle Pull Test	Color Proof

Fourteen tests are required in food packaging production process:

Abrasion Resistance Test	High And Low Temperature Test	Immersion Decolorization Test

Supply Chain Management

Rich supplier resources, stable supply, and wide material coverage.
Strong partnerships with the world's four major paper mills, maintaining long-term strategic cooperation.
Unique strategic resources and geographical advantages, with convenient water and land transportation.
Meeting customer customization needs and providing maximum support for one-stop supply services.

PERFECT AND COMPREHENSIVE INSPECTION

Designed to meet CNAS laboratory certification standards, this facility can test the compliance of paper, ink, and glue. The laboratory is equipped with over 100 testing instruments, with a total investment of nearly ten million. It includes advanced testing equipment such as atomic fluorescence spectrometers, gas chromatography mass spectrometers, and plasma emission spectrometers, capable of detecting compounds and heavy metals in raw materials.

1. Physical Laboratory
   Equipped with all the instruments needed to test the physical indicators of paper, glue, ink, and finished products.
2. Microbiology Laboratory
   Conducts microbiological monitoring of raw materials and finished products in accordance with the national food safety standard GB4806.8. Monitors and controls microbiological factors as required by GB31603.
3. Chemical Analysis Laboratory
   Tests all items under GB4806.7 and GB4806.8.
4. Simulation Laboratory
   Simulates terminal usage scenarios for various testing environments.

TRACEABILITY SYSTEM

By assigning a unique traceability number to each batch of products, every item has its own unique product number. Nannwang has established a comprehensive traceability system for the production process of each batch, allowing for data collection and tracking across various stages, including suppliers, raw materials, production, storage, sales, market inspections, and consumers. Product traceability can be completed within 24 hours, enabling a quick response to customer feedback.