Plastic formwork is a relatively new product that, although not yet widely promoted in the construction industry, is being actively advocated by many organizations and governments as a green product. Some have even mandated its use. However, regardless of how it is promoted, builders are primarily concerned with how to do more with less, which means reducing costs. In addition to protecting the environment, one of the major advantages of plastic formwork is its reusability. The more times it can be used, the more cost savings can be achieved. So, how can using plastic formwork save up to 50% in costs? A previous case involved the Zhengzhou Zhongjian Seventh Bureau's Guanh Lake International project. At the time of signing the contract, the budget was over 3 million, which was based on the budget for wooden formwork. However, after the upper floors were capped, only over 1 million was spent, achieving a budget savings of over 50%. To save costs, one key point is that the product must meet standards. If the product does not meet requirements, then as long as it is within budget, there is no hope for cost savings—it's better to stick with wooden formwork. Secondly, construction management on site is crucial. Since plastic formwork is a new product, some carpenters may not have used it before, and compared to wooden formwork, plastic formwork might be slightly heavier, which workers may not prefer. If they dislike using it, they might express resistance and claim the product is poor. We have encountered these issues before, and they sound familiar—wooden formwork faced similar challenges during its promotion. The transition period for new product promotion is inevitable, but it is the direction of the trend; if the site persists in using it, they will eventually adapt. Another significant issue is waste, which is also related to construction management. Sometimes, plastic formwork that could still be used is discarded simply because workers see new boards and refuse to use the old ones, leading to considerable waste. The management method of Zhongjian Seventh Bureau is very effective; they let two buildings use plastic formwork simultaneously and compare which side wastes more. If there is a significant difference, it indicates one side is not managing well, which allows them to address the issue with the labor team. Having this comparison encourages workers to be more cautious during use and to avoid waste. Consequently, the cost savings for the two buildings reached over 50%. Many people ask me how many times plastic formwork can be reused. This question is difficult to answer because the number of uses is directly related to how the construction team operates. If used normally with wear and tear, 30 uses are definitely possible, and even up to 50 can be achieved depending on usage. However, if the formwork is carelessly discarded or damaged, I cannot guarantee results. Thus, the premise for achieving 30 uses is that it must be used normally and not wasted recklessly.