In Paragraphs^x, Indefinite articles^x, Commas^x

Hi Chintu, welcome to the Forums, First of all, here is the wrong place for your post . Try to repost it to the writing section where it can get more attention from people who are interested in correcting others' writings. But here are a few hints: try to write your article using the...

It is a little difficult to correct without seeing the context of the whole paragraph. I see 2 points. 1/ Your text ..'and replaced by the new GPS based technology such as a RTK'..etc. The text contains the definite article 'the new GPS..' then it reads... 'such as a (indefinite article)...