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This paper aims to investigate and document the effects of copper-clad laminate (CCL) inorganic filler on the hole performance in printed circuit boards drilling process.

Drilling of brittle laminates can result in hole cracking, layer-to-layer delamination and drill-bit wear and tool breakage. Adding large amount of fillers not only shortens the life of the drilling tool but also affects the drilling properties significantly regarding hole quality. This paper introduces the influence of filler content, type, hardness, particle size and the compounding method in the manufacture of the CCL on the drilling performance.

The filler content, filler type, hardness of filler, particle size of filler and the compounding method used for the filler have a great influence on the drilling properties of CCL. The higher the filler content, the larger the particle size and the more the hardness of the filler, the worse the drilling properties. The combination of hard particles like silica with softer particles can improve the drilling performance of CCL.

The paper describes what affects the drilling performance of CCL and how this knowledge can be used to design CCL with good drilling performance.

Drawing upon new institutional economics and contracting theory, this chapter extends the concept of headquarter (HQ)–subsidiary relationships to capture unconventional types of subsidiary organizations in transition economies. A conceptual framework is first developed to examine how the interplay between institutions and subsidiaries shapes HQ–subsidiary relations in rapidly changing institutional environments. It is then applied to study contractual joint ventures in China, an important, yet often misunderstood, form of multinational subsidiary operation. The research sheds new light on how parent firms design contract provisions, credible commitments, and contract renegotiation mechanisms for the effective management of joint venture subsidiaries. These findings have important implications for future inquiry into the interplay between institutions and organizations in safeguarding subsidiary operations in transition economies.