Key Takeaways BRK.B's industrial-products segment contributes 46% of manufacturing revenues and 50% of earnings.Precision Castparts, Lubrizol and IMC support BRK.B's margin resilience across cyclical industrial sectors.Industrial offerings provide stability with long product cycles and demand less tied to economic shifts.Berkshire Hathaway’s (BRK.B) manufacturing operations are a vital pillar of its long-term growth strategy, contributing significantly to revenues, earnings stability and diversification. Sp ...