Elevating Excellence:Tianyi’s 5-Step Quality Assurance

Since 1990，we have gone through many hardships and setbacks,only then did we become who we are today.We used to be just a small factory,now our filter bags are widely used in industrial filtration, water treatment, food and beverage industries all over the world.And you must wonder:why can our filter bags be used in so many industries?

As a filter bag, it must face various difficult environments, which means that every filter bag requires extremely high quality.We are well aware of this and strictly adhere to our standards:At Tianyi Environmental Protection And Technology Co.,Ltd., every product undergoes ​five meticulous inspection stages to ensure unparalleled reliability and performance. 1.Material Selection: Precision from the Start,Our technicians meticulously examine raw materials, verifying mesh uniformity and surface smoothness. Any irregularity in pore distribution or material texture is rejected immediately.2.Slice Integrity Check: During cutting, workers inspect each slice for completeness and dimensional accuracy.3.Pre-Stitching Inspection: Before stitching, sewing operators re-examine fabric integrity, ensuring no hidden flaws like micro-tears or contamination. This step aligns with our ​SOP (Standard Operating Procedure).4.Threadwork Scrutiny: Post-sewing, every seam undergoes a tension test and visual inspection to detect loose threads or misalignment. Our defect rate remains below ​0.1%​ thanks to this dual-layer verification.5.Comprehensive Final Check: Before packaging, products are checked for surface imperfections, size deviations, or functional issues. Only flawless items are approved for shipment, ensuring customer satisfaction.

We have been involved in the filtration industry for over 30 years.But we still remain true to our original aspiration:try to be better in the filtration industry.Contact us and we are ready to offer you our best service!