Advanced Semiconductor Engineering (ASE) helps chip makers wrap up production. The company is one of the world's leading providers of semiconductor packaging services; it also designs and manufactures interconnect materials and provides front-end and final chip testing services through its subsidiary ASE Test. The company provides electronic manufacturing services through Universal Scientific Industrial (USI), and it owns ISE Labs, an engineering test services provider in Silicon Valley. Customers in the US account for about 65% of ASE's sales. The company has more than 240 customers around the world; some of the largest include Broadcom, Microsoft, NVIDIA, and STMicroelectronics.