Why should we keep a keen eye on internal costs? According to the industry report, if a company wants to keep a sustainable growth and survive in an industry, the capability to control internal cost is quite vital . In fact, there is no lowest cost, but a reasonable one . Too low cost will lead to low quality. And nowadays, few people will buy a product that is “lowest price but highest quality”. Obviously, it is impossible to ensure high quality while you just invest a little on products. Then how can we ensure a reasonable cost while keeping ourselves competitive in the market? There are two ways to cut internal costs, one is to enhance internal management and the other is to increase efficiency. Before adopting these two methods, offering products and services of consistent quality should come first. Try to understand each requirement from customers and know clearly of customers’ expectations, and then achieve lean production while producing products that really me...