what is the Project management concept? and can it be applyed for your private company ,manufacture?

Answer 1

“Project management is the application of knowledge, skills, tools, and techniques to a broad range of activities in order to meet the requirements of a particular project. Project management is comprised of five Project Management Process Groups – Initiating Processes, Planning Processes, Executing Processes, Monitoring and Controlling Processes, and Closing Processes – as well as nine Knowledge Areas. These nine Knowledge Areas center on management expertise in Project Integration Management, Project Scope Management, Project Time Management, Project Cost Management, Project Quality Management, Project Human Resources Management, Project Communications Management, Project Risk Management and Project Procurement Management.”

A Guide to the Project Management Body of Knowledge (PMBOK® Guide), - Third Edition

"A project is a temporary and one-time endeavor undertaken to create a unique product or service."

Wikipedia - Project Management

Project management principles can be applied to any size business or personal project.

Answer 2

Yes, it can be adapted for small business. Project Management is a business model that covers planning, budgeting, and implementation.
PM allows for an organized and systematic approach to any project.