There are many reasons for choosing to rent excavators, and the following are some common reasons:

成本考慮：購買一臺新的挖掘機需要支付巨額的資金，而租賃挖掘機可以將成本分攤到每個項目中。對于小型企業或個體工程商來說，租賃挖掘機可以減輕經濟負擔，提高資金利用效率。

Cost considerations: Purchasing a new excavator requires a huge amount of funding, while leasing an excavator can allocate the cost to each project. For small businesses or individual engineers, renting excavators can reduce the economic burden and improve the efficiency of fund utilization.

靈活性：挖掘機市場需求會根據項目周期和規模的變化而波動。租賃挖掘機可以根據實際需要進行靈活調整，避免了固定資產的束縛。而且租賃挖掘機還可以根據項目要求選擇不同型號和規格，滿足不同施工需求。

Flexibility: The excavator market demand will fluctuate according to changes in project cycle and scale. Leased excavators can be flexibly adjusted according to actual needs, avoiding the constraints of fixed assets. Moreover, leasing excavators can also choose different models and specifications according to project requirements to meet different construction needs.

技術更新：挖掘機是一種技術密集型設備，隨著科技的發展，新型的挖掘機不斷涌現。租賃挖掘機可以讓租賃方始終使用的設備，提高施工效率和質量。

Technical update: Excavators are a technology intensive equipment, and with the development of technology, new types of excavators are constantly emerging. Leasing excavators allows the lessee to always use the latest equipment, improving construction efficiency and quality.

維護保養：挖掘機的維護保養是一項繁瑣的任務，對于一些沒有相關知識和設備的企業或個人來說，難以勝任。租賃挖掘機通常由公司負責維護保養，讓租賃方省去了維修和備件的麻煩。

Maintenance: The maintenance and upkeep of excavators is a tedious task, which is difficult for some enterprises or individuals without relevant professional knowledge and equipment to handle. Leased excavators are usually maintained by professional companies, saving the lessee the hassle of repairs and spare parts.

使用期限：有些項目只需要短期使用挖掘機，購買一臺新的挖掘機無疑是浪費資金的選擇。租賃挖掘機可以根據項目周期靈活租用，不需要長期占用空間和資源。

Usage period: Some projects only require short-term use of excavators, and purchasing a new excavator is undoubtedly a waste of funds. Leasing excavators can be flexibly rented according to the project cycle, without the need for long-term occupation of space and resources.

總之，選擇租賃挖掘機可以降低成本、提高靈活性、使用、省去維護保養等方面的麻煩，因此許多人選擇租賃挖掘機來滿足工程施工需求。

In short, choosing to rent excavators can reduce costs, improve flexibility, use the latest technology, and save maintenance and upkeep. Therefore, many people choose to rent excavators to meet the needs of engineering construction.