BizWritingTip response: Any abbreviation composed of upper and lower case letters should have a period after it. Therefore, Ltd. is correct. ... The period at the end of the abbreviation serves also as the period at the end of the sentence.

Does Ltd have a full stop after?

Always write with full stops, unless the last letter of the abbreviation is the last letter of the full term or phrase. Examples F.A.O., fig., tel., i.e., Ltd, cf., Mr, Dr, no (use a full stop if necessary to avoid confusion: no. ... The plural of abbreviations or figures does not take an apostrophe.

Do you put a period after co?

Re: a period after "the U.S." or "Co., Ltd." at the end of a sentence. 'Notice that if a sentence ends with an ellipsis, a final period is included for clarity.