一段英文,几句话,有空请帮我看看哪里需要改改

一段英文,几句话,有空请帮我看看哪里需要改改
-Firstly,a supplier which offers raw materials or goods with better quality is considerable.
-It will indirectly affects the company’s image and sales as the finished products or service are based on them.
-Secondly ,less important costs is also an irreplaceable element.
-Not only about the product costs ,but also include transportation costs ,and some times customs duties.
-That means a supplier which provides the most reasonable price and located nearest the company is likely to be the ideal one
-This is a direct way to increase the profit.
-The last but not the least ,adequate supply is always required.
-Avoid suppliers which in a country that have political instability or trade barriers to the target products.
-Because if the supply is cut off ,the company would forced to be discontinued.And the losses caused by it would beyond compute.
-All in all,the 3factors mentioned above are the keys to decide which supplier is for the company.