—Th e main purpose of this work is to report an implemented novel methodology to support Small and Medium Enterprises (SMEs) managers in better understanding the specific requirements for the implementation of Industry 4.0 solutions and the derived benefits within their firms. The methodology was implemented in a pressurized cylinder manufacturing company as a case study. The cylinder losing, inadequate scrap management, and bottlenecking in body welding were identified as three of the main problems that could be addressed through Industry 4.0. Potential solutions were considered and found suitable solutions for the problems. For example, Radio-Frequency Identification (RFID) tool was proposed to prevent the illegal cross-filling and illegal cylinder swapping problems and it will help for cylinder identification. A rough techno-economic feasibility analysis was also done for the proposed solutions, which will be helpful for SMEs manager to decide regarding when and how to migrate Industry 4.0. Keywords— industry 4.0, assessing tool, SME, pressurized cylinder manufacturing. I. INTRODUCTION Industry 4.0, also called the fourth Industrial Revolution, is a flourishing research topic curr ently. It is the combination of several emerging tools and technologies, for example, 3D- printing, big data, cloud computing, smart sensors, machine learning (ML), radio-frequency identification (RFID), robotics, and Internet of Things (IoT), among others [1]. Implementing Industry 4.0 solutions has become familiar today in many process manufacturing organizations, as it has distinguished tools and technologies to solve critical problems. However, the novelty and diversity of tools making up this industrial revolution represent an obstacle for the transition towards Industry 4.0, above all for Small and Medium Enterprises (SMEs). The novel methodology proposed by [2] will be applied to an LPG pressurized cylinders manufacturing and distributor company, as a case study. Some of the existing needs identified in the LPG company, are the exis tence of a bottleneck in the body welding operation, defici ent scrap management, and a low rate of cylinder return for refilling. These problems could be solved by the implementation of Industry 4.0 solutions, for instance: cloud-based robotic arm, smart sensor based on real-time data acquisition coupled with machine learning algorithms, and RFID tags and GPS, respectively. By applying the proposed supporting tool, manager levels can identify the benefits of those potential solutions and the requirements for implementation. The second section of this paper corresponds to a brief literature review on SMEs reality facing Industry 4.0, followed by a problem statement. In the next section, the proposed methodology is presented concisely and depicted through the case study. The paper closes with the limitations of the study, next work, and conclusions. II. L ITERATURE REVIEW T he literature review consists of two parts. The first is the reality of SMEs facing Industry 4.0, and the second is related to some applications of Industry 4.0. A. Reality of SMEs facing Industry 4.0 In general, large enterprises are more advanced in integrating IT systems into their operations than medium-sized enterprises, and the latter are more advanced than small enterprises [3]. Kleindienst and Ramsauer [4] commented on the problems SMEs are facing in the Industry 4.0 context. These authors identified the lack of specialized IT personnel as the biggest of those problems since usually SMEs develop very easy spreadsheet-based tools (tailored solutions) with limited connectivity with other resource s within the company or by * The first two authors contributed equally. interacting with other companies, making too difficult the implementation of Industry 4.0. Müller et al. [5] explored how SMEs approach implementation of Industry 4.0 and how they could innovate in their business to increment the derived benefits. Managers from 68 German SMEs were interviewed regarding the understanding of the term Industry 4.0, challenges for implementation, and Industry 4.0-enabled innovations across the business model. B. Some applications of Industry 4.0 TABLE I. shows some examples of Industry 4.0 specific applications in SMEs. This kind of portfolio of projects could help SMEs managers to visualize how Industry 4.0 brings concrete benefits to their production processes. TABLE I. APPLICATION OF INDUSTRY 4.0 IN SME S [2] Application Tools