TIEN YIH ENTERPRISE LTD. - TIEN YIH - Only one in the world: ISO 9001 certified and diversified manufacturer of custom shopping bags.

TIEN YIH Quality Standard - Custom Bag Testing | ISO 9001

TIEN YIH ensures quality custom shopping bags through ISO 9001 testing: tensile strength, swing test, and 24-hour load testing for durability.

Quality Standard for Custom Promotional Bags - ISO 9001 Certified Testing

Comprehensive quality assurance through rigorous testing protocols including tensile strength, swing, and load tests for factory-direct custom shopping bags.

Quality standard and test repot for custom shopping bag factory-direct.

Quality Standard

Quality standard for custom promotional bags

Rapid delivery for high quality product is usually the main appeal for custom promotional bag suppliers. It seems that there is no standard definition of shopping bag's quality. Finally, it often determined by price, and it is not objective. TIEN YIH focus on the manufacturing process of each shopping bag and we follow ISO 9001 standard. Our quality management system is established through our 30-year-old manufacturing process experience. We provide test report as acceptance report for every batch production with load test, swing test and tensile strength test.

Tensile Strength Test of handle (ISO 9073-3)
Tensile Strength Test of handle (ISO 9073-3)

Tensile strength test of the handle plays an important role in determining the quality of shopping bags. We will use professional equipment to measure the tensile limit value of each custom shopping bag until it is broken. We recorded and analyzed the data meet the standard or not. We ensure that each batch of production meet the average of our tensile Strength in order to control our quality.

Swing Test of Shopping Bags (CNS15331 Section4.8)
Swing Test of Shopping Bags (CNS15331 Section4.8)

The way consumers use the bag may cause bags broken and can no longer be used. We use the fixed weight to test for 4 hours with amplitude of 70mm and a frequency of 60cycle/min. We also D-check the structure broken or not. This way ensures our good quality.

Load Test (Depends On Each Shopping Bag)
Load Test (Depends On Each Shopping Bag)

Load test is the basic way to measure weight resistance of shopping bags. The test standard is according to the weight of the content that the customer needs to load. We simulate the same weight of contents to load test for 24 hours to ensure the safety when using shopping bags.

How can we verify that custom shopping bags will withstand real-world retail use without quality failures?

TIEN YIH's ISO 9001 certified quality management system provides objective verification through three critical tests: tensile strength testing measures handle durability until breaking point, swing testing simulates 4 hours of consumer use, and 24-hour load testing ensures weight capacity safety. Every batch includes acceptance reports with test data proving consistent quality standards, eliminating subjective price-based assessments and ensuring your retail bags perform reliably.

As a factory-direct supplier, TIEN YIH delivers rapid turnaround times without compromising quality assurance. Our acceptance reports include comprehensive test data demonstrating that every custom shopping bag meets or exceeds our established tensile strength standards, swing durability requirements, and load-bearing specifications. Whether you require non-woven bags, canvas bags, paper bags, or laminated bags with gravure, flexographic, screen, or sublimation printing, our quality-focused manufacturing process ensures your promotional packaging performs reliably under real-world conditions. Contact our team today to discuss your custom bag requirements and receive detailed quality specifications for your next order.