Zara's business model allows it to have low production costs and high control over its supply chain. It can design, produce, and distribute new fashion items to stores within 4-5 weeks, much faster than competitors. This quick response time means Zara can follow fashion trends rather than predict them. Zara also owns fabric suppliers and manufacturers, reducing costs and time. An appliance maker was losing market share for fans. A teardown of competitors' fans found the company overbuilt its fans, increasing costs. Design changes like removing unnecessary internal brackets cut costs by 7% per fan. Multiple small changes reduced total fan manufacturing costs by over 10%.