IC packaging and testing houses Advanced Semiconductor Engineering (ASE) and Siliconware Precision Industries (SPIL) have reported sequential increases of 5.8% and 5.7%, respectively, in consolidated revenues for August 2015.

ASE's consolidated revenues for August 2015 increased 9.5% from a year ago to NT$22.92 billion (US$724 million), consisting of sales of the company's core IC ATM (assembly, test and material) business and those generated by EMS subsidiary Universal Scientific Industrial (USI).

ASE's IC ATM unit posted revenues of NT$13.47 billion in August 2015, up 4.1% on month but down 3.2% on year.

ASE COO Tien Wu noted previously that the company would manage to post sequential revenue growth through the fourth quarter of 2015. Wu also expressed optimism about ASE's SiP (system-in-package) business, which is expected to account for 25-29% of the company's overall revenues in the fourth quarter and enjoy a sales jump of 100% in all of 2015.

SPIL posted August consolidated revenues of NT$6.71 billion, down 4.2% compared to August 2014.

SPIL estimated previously that revenues for third-quarter 2015 would fall 7-12% sequentially to NT$18.6-19.8 billion. Company chairman Bough Lin suggested a particularly weak second half of 2015 for SPIL due to decelerating smartphone demand in China and other emerging markets, weaker-than-expected demand for consumer electronics devices, as well as unfavorable economic conditions.

ASE's consolidated revenues for the first eight months of 2015 totaled NT$179.47 billion, rising 16.3% from a year earlier, while SPIL's revenues for the eight-month period increased 1.3% on year to NT$55.11 billion.