When the project involves full life-cycle costs, the screwdriver programme must start from the real-life job of the client. The sales manager is required to organize the purchase price, lifetime, good rate, periodicity, energy consumption and shutdown as a set of reconcilable, calculable and retroactive entry conditions.

The effectiveness of the programme needs to be verified with the same materials, moulds and test methods. In addition to size and material reports, time measurement, buffer position, pressure curve, temperature, product weight, appearance and periodicity should also be recorded, with clear acceptance windows. Data-based delivery reduces disputes and facilitates subsequent replication. Technical communication distinguishes between three types of objectives that must be met, desired improvement and acceptable. It is necessary to meet the hard boundary of the item for the determination of equipment and screws, and it is hoped that the improvement item will be used for the comparison of standards and specialized programmes, while the acceptable item will help to control costs and deadlines. This would avoid stacking all requirements on a screw and would make it easier for clients to understand the real value of each configuration.

Calculates the nominal value to be converted to the actual condition. The machine often uses PS as a reference for the gel weight, which should be revised by density when using other raw materials; the weight of the product should be added to the main course, traffic separation and a reasonable buffer. The larger the diameter of the screw, the greater the theoretical capacity, but the pressure of injections per unit area under the same hydraulic pressure or servo system will decline and the resolution of the measurement of the small amount of the aerosol may also be variable. The focus of discussion in this paper is on procurement prices, lifetimes, probabilities, cycles, energy consumption and shutdowns, which must correspond to the current level of production conditions of the client and cannot be based solely on the maximum values in machine samples.

In the context of this project, it is proposed to adopt the concept of “cost modeling with actual customer production”. First, to determine whether the available data support the choice, then to calculate the volume of reductive, pressure and plasticization, and finally to discuss the geometry, front-end components and material handling of the screws. If the standard formula is able to cover the window, priority should be given to the standard configuration; the risk of underestimating the benefits of the earmarked programme if compared only with the initial price remains, with a dedicated structure being proposed and an indication of the increased costs, delivery periods and expected benefits.

If only an empirically quick billing is made, a comparison of the initial price only underestimates the likelihood that the benefits of the earmarked programme will occur after delivery. The success of a single test module does not represent long-term stability, particularly for projects with high filling, high temperature, frequent colour change or multi-molecular co-plasms, and needs to look at changes in batches of material, the length of continuous production and the accumulation of wear and tear.

It is recommended that clients set clear floors and floors around every 10,000 items of cost and investment recovery, rather than just " running " . Quantification criteria may include measurement of time fluctuations, extremely poor product weights, number of black dots, change time, hourly production or ton wear and tear, with specific projects choosing indicators that really affect business outcomes. The sales proposal should answer three questions at the same time: why this selection was made, which conditions had changed and which were re-selected, and how the customer validated the results. Clearing these three issues would make it possible to move the full life cycle cost from a trade in accessories to a traceability technology project.