Rib Thermal Knit Fabric (Off-White W1007)

An overseas customer (*** company) ordered 120,000 meters of all-polyester fabric, to be shipped in 3 batches. After the first batch of 40,000 meters arrived at port, the customer's quality inspection found that the actual gram weight was 118g/m², a deviation of 5.6% from the contracted 125g/m², exceeding the 3% tolerance range. Additionally, the dark blue batch (20,000 meters) showed obvious batch-to-batch color difference, with left-right color difference ΔE values within the same roll reaching 1.8-2.3, far exceeding the acceptable ΔE≤1.0 standard for foreign trade bulk goods. The customer requires a full return and replacement of the entire batch, and claims compensation for the port demurrage charges and inspection fees already incurred.

1. Urgently retrieve factory production records and retained samples to confirm that the weight deviation was caused by improper adjustment of weaving process parameters, and the color difference issue originated from a malfunction in the dyeing vat temperature control system. 2. After negotiation with the customer, an agreement was reached: the first 20,000 meters of dark blue fabric out of the initial 40,000 meters are to be fully returned, while the remaining 20,000 meters (non-dark blue) will be accepted at 85% of the contract price; simultaneously, the factory will arrange to re-produce 40,000 meters, of which 20,000 meters are a re-order of dark blue and 20,000 meters are an equal-quantity replenishment. 3. All reworked fabrics must be issued with weight and color fastness reports by a third-party inspection agency (SGS) before leaving the factory, and each roll must be labeled with the dye lot number and weight data. 4. Our side will bear the return freight, customer port charges, and inspection fees totaling USD 6,800, and commit to shortening the delivery time by 7 days, with 2,000 meters of emergency fabric sent by air freight for the customer's initial production.

A European clothing brand buyer ordered a total of 120,000 meters of polyester fabric from our company through a B2B platform, to be delivered in 3 batches by sea. After receiving the first batch, the customer reported during spot inspection that some batches of fabric had color differences, especially dark-colored fabrics, which showed obvious visual differences under natural light. The customer requested a full return and compensation claim. Due to a 7-hour time difference between the customer's location and our company, we could not handle the issue on-site immediately, and the customer urgently needed production scheduling. Phone communication could not confirm the actual situation.

Our company has initiated the remote technical support service process: First, we arrange for a technical service engineer to connect via video conference with the customer's warehouse quality inspection personnel, guiding them to conduct gray scale rating in accordance with the international standard (ISO 105-A02), and remotely compare and confirm whether the color difference level exceeds grade 4. At the same time, we retrieve the production records and factory inspection reports for this batch, and discover that a change in the raw material batch number led to a slight adjustment in the dyeing machine formula. The engineer then remotely guides the customer to adjust the cutting batch allocation plan, grouping rolls with similar color differences for use together, and records a detailed color difference classification instructional video to send to the customer, assisting the customer's quality inspection team in establishing a new incoming inspection standard.

The customer purchased 500,000 meters of 100% polyester fabric (Order No.: ***). During garment processing, they reported severe shrinkage exceeding standards and insufficient color fastness, with a claim amount as high as USD 300,000. After remote troubleshooting by our technical team and testing of returned samples, it was confirmed that the fabric's physical and chemical indicators were qualified. The root cause was the customer's factory using non-standard high-temperature setting processes and alkaline dyeing post-treatment procedures, leading to fabric shrinkage and fading.

We have immediately initiated our after-sales service process, dispatching 2 senior technical engineers to fly to the customer's factory (location: ***) to conduct a 3-day on-site special training service: 1) Explain the correct high-temperature heat-setting temperature, time, and tension control parameters based on the fiber characteristics of polyester fabrics; 2) Demonstrate standard post-dyeing neutralization, washing, and color fixation operations to correct their alkaline residue problem; 3) Provide bilingual (Chinese-English) "Polyester Fabric Processing Operation Manual" and video tutorials, and guide the customer on-site in adjusting production line process parameters; 4) Train the customer's factory quality control personnel on rapid testing methods for fabric shrinkage rate and color fastness.