Use the following material as a reference to answer the questions below:

Supply chain is a concept that includes a series of companies involved in the flow of products, services, finance, and information from source to end customer. This process involves companies upstream $($suppliers$),$ downstream $($distributors$,$ retailers$),$ and customers at the end. Supply chains can have different levels of complexity, such as direct supply chains, involving companies, suppliers and customers; expanded supply chains, which also involve supplier partners and their customers; and the primary supply chain, which includes all entities involved in the entire flow of products and services from source to end customer. Supply chain is a concept that describes how various entities work together to create value and meet the needs of end consumers.

The Plan$-$Source$-$Make$-$Deliver$-$Return concept in Supply Chain Management involves five main phases that must be managed efficiently to achieve smooth and successful company operations. These five phases are:

$1.$ Planning $($Planning$)$

$2.$ Start with planning to address supply needs that match customer demand and manufacturing needs. Planning includes calculating the raw materials or components needed during each production stage, equipment capacity and limitations$,$ as well as labor requirements. Companies typically rely on enterprise resource planning $($ERP$)$ software to help coordinate this process.

$3.$ Resources $($Sourcing$)$

Sourcing involves working with vendors to provide the materials needed during the manufacturing process. Sourcing aims to ensure that raw materials or components meet the manufacturing specifications required for the production of goods. The price paid by the vendor must be in accordance with market prices.

$4.$ Production $($Manufacturing$)$

Companies use machines and labor to change raw materials or components they have received from suppliers into something new. The final product is the main goal of the manufacturing process. The manufacturing process can be divided into sub tasks such as assembly, testing, inspection, and packaging.

$5.$ Delivery $($Delivery$)$

Once the product is manufactured and sales are completed, the company must ship the product to the customer. An efficient company will have strong logistics capabilities and delivery channels that ensure timely, safe and economical delivery. This includes having backup or multiple distribution methods in case one delivery method is temporarily unusable.

$6.$ Returns

The supply chain management process ends with product support and customer return. These returns are often referred to as reverse logistics$,$ and companies must ensure that they have the capability to accept returned products and issue appropriate returns. Returns can also be a valuable form of feedback that helps the Company identify defective or poorly designed products and make necessary changes.

The supply chain concept refers to a series of integrated activities, starting from procurement of raw materials, production, to distribution of products to consumers. The supply chain involves various parties, such as suppliers, producers, distributors and consumers.

The plan$-$source$-$make$-$deliver$-$return concept is a model used in supply chain management to describe the main business processes that occur. The following is an explanation of each element:

$1.$ Plan: This is the initial stage where the company plans and manages overall resources to meet customer demands.

$2.$ Source $($Procurement$)$: This stage involves procuring the raw materials or components needed to make the product.

$3.$ Make $($Production$)$: At this stage, raw materials are processed into finished products.

$4.$ Deliver: The finished product is then distributed to consumers or retailers.

$5.$ Return: This stage involves managing products returned by consumers, whether due to defects, unsuitability, or other reasons.

The supply chain system is an integrated system from processing raw materials into finished goods, then consumed and returned to the producer.

Question:

Provide an explanation of the supply chain concept and the plan$-$source$-$make$-$deliver$-$return concept, complete with charts!

$($NOTE: Assignments are written using your own words. Assignments must not be copied exactly from articles or other sources. If there are definitions or research results taken from journals$/$other sources, please include footnotes $($source identity$)$ and references.$)$