业务依赖什么

1. 1Production depends on copper, brass-making materials such as zinc and tin, aluminum, and energy; copper is obtained through short-term supply contracts and the open market.
2. 2A substantial part of demand for plumbing, heating and refrigeration products depends on new housing, commercial construction, repairs and remodeling.
3. 3Margins on some products depend on the difference between metal input costs and selling prices; Mueller generally passes material-cost changes through to customers, but timing and inventory accounting can affect margins.