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Crystal Group Uses RFID Tags to Track Garment Production
The Hong Kong knitwear company has installed RFID interrogators at 8,000 sewing stations in three of its plants, so that it can record the number of garments made by each worker.
Dec 07, 2007—Hong Kong knitwear company Crystal Group is employing passive 13.56 MHz RFID tags to track garments as they are manufactured. The company maintains 15 manufacturing sites in Sri Lanka, Vietnam, China, Hong Kong, Macao and Malaysia that produce more than 90 million garments each year. Crystal Group's clients include GAP, Old Navy, Wal-Mart, JC Penney, Marks and Spencer and Ann Taylor. Three of the manufacturer's sites currently use RFID technology to track the number of products workers manufacture during their shifts.
Because of the large volume of products it makes, Crystal Group emphasizes speed and quality in the production process. To accomplish this goal, the company closely monitors work-in-progress from sewing newly cut fabric to shipping completed garments, as well as the planning of workloads and payroll for the company's many sewers.
The company wanted a faster and more accurate scanning process, as well as a system that could be integrated into its own back-end management system. Therefore, over the past three years, Crystal Group has been gradually implementing an RFID solution provided by Malaysian IT solutions and technologies company GPRO Technologies. The firm is now using GPRO's Shopfloor Data Tracking (SDT) system with RFID interrogators installed at every sewing station in some of its facilities. GPRO custom-built and provided all the hardware, including RFID-enabled ID cards and garment labels, label printer-encoders and interrogators, which comply with the ISO 15693 RFID standard.
In mid 2004, the clothing manufacturer first tested the system at one factory in China. Since that time, it has begun rolling out the system at several of its largest facilities—two in the Dongguan region of China and one in Hanoi, Vietnam. Crystal Group has installed RFID interrogators at about 8,000 sewing stations in the three plants. Within the next few months, says Quek Kar Loon, GPRO's CEO and cofounder, the company plans to add readers to another 4,500 stations at other manufacturing sites.
With the new system, employees begin their shift by using their station's RFID interrogator to read the unique number of the passive 13.56 MHz RFID tag embedded in their ID card. Each employee's card number is linked to that person's name and place of employment in Crystal Group's back-end system.
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