Hardware customized sample needle metal kits for an in vitro diagnostic device enterprise. Using micron-level laser cutting technology, the wall thickness tolerance of the needle tube was controlled within 0.005 mm, ensuring the sample extraction accuracy reached 99.9%. Meanwhile, customized automated assembly jigs were provided, shortening the assembly time of a single device from 2 hours to 25 minutes. This helped the partner increase the shipment volume of in vitro diagnostic analyzers by 55%,