340销路好0.7-100 建大厂 2 销路差0.3-20 150 销路好0.7 40 建小厂(3 销路差0.31 2 3 建大厂 建小厂 销路好0.7 销路好0.7 销路差0.3 销路差0.3 100 -20 40 10 340 150