If have specific requirements, such as drawings or hydraulic principle diagram of heavy duty hydraulic cylinders, you only need to tell us the working conditions and working environment specifications, such as temperature requirements, outdoor or indoor, whether it needs anti-corrosion treatment, whether the working environment is very bad, etc.
If you are not able to provide us with drawings, you just keep us known the following parameters:
Hydraulic cylinder: bore diameter, rod diameter, stroke, mounting length, installation method, material requirements, components requirements, etc.
Hydraulic system: required parts and specifications list, workflow, etc.