This useful book provides the technologists, practising engineers new to the oil hydraulic field and all beginners with a general overview of oil hydraulic control systems introducing the key hydraulic components and it practical applications in diversify industries. Although this book is written for the technical people, the author is also mindful about the general readers who may be non-technical and wish to learn basic hydraulic principles. Chapter 1 to 3 are carefully planned and through non-technical explanations, the general readers may find this subject easier than they thought. Other features of the book: • Illustration of hydraulic components and their respective symbols • Step-by-step calculations and sizing of hydraulic components • The important about technology update