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

Quality Standard Custom Bags | TIEN YIH ISO 9001

TIEN YIH ensures superior quality custom shopping bags through ISO 9001 standards, tensile strength, load, and swing testing for reliable performance.

Quality Standards for Custom Promotional Shopping Bags

Comprehensive ISO 9001 Quality Testing and Certification 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 you ensure custom shopping bags won't fail during daily delivery operations and customer handling?

TIEN YIH's rigorous load testing (24-hour duration matching your specific weight requirements) and swing testing (4-hour simulation of consumer usage patterns) guarantee your delivery bags maintain structural integrity under real-world conditions. Our ISO 9001 certified process includes tensile strength analysis of handles and comprehensive test reports for every batch, eliminating the risk of bag failure that damages customer satisfaction and brand reputation. Request a detailed quality test report sample to see how our testing protocols exceed industry standards.

As a factory-direct manufacturer with automated production capacity exceeding 5-8 million non-woven bags and 5 million paper bags annually, TIEN YIH combines high-volume manufacturing efficiency with meticulous quality control to guarantee consistent excellence in every custom shopping bag delivery. Our quality assurance methodology protects your brand reputation by ensuring bags withstand tensile stress, swing fatigue, and load capacity demands through professional equipment measurement and data-driven analysis. Partner with TIEN YIH for custom shopping bags that demonstrate measurable quality superiority, comprehensive test documentation, and the reliability your business customers demand—contact our team today to discuss your specific quality requirements and production needs.