Do non-English papers/publications have value in a CV which is going to be sent to an English company/university? Some of the students are doing research in another language than English because they are living and studying in a non-English speaking country; they may be doing research in their mother-tongue language because they are studying in their own country or they are studying in another country in which the language is not English.

If these students have non-English language publications which are published or sent to a non-English conference/journal; Do these publications still have the same value in their CV when they are going to send it to an English speaking university/company? Or only publications in English are of value in those institutions.

PS: I think the situation is easier for the students having English publications in their CVs and want to send it to a non-English speaking university/company as they welcome and accept those publications.
In an academic mathematics context: it's not a question of English itself, neither of the paper itself nor of the journal, but of the reputation of the journal. At the very least, French, German, English, and Russian are languages in which there is a very well established mathematics literature. I think all the better mathematics journals accept submissions in English, French, and German, at least.

It is true that perhaps one's paper will have the widest readership these days if it is in English, although 40 years ago anyone learning mathematics had to learn to read French and German, perhaps more than English, because the previous 150 years' mathematics was written primarily in those languages. 

It is nevertheless possible that a very provincial situation or person would have a prejudice about non-English (or non-whatever) research papers or journals, and there is little one can do to guard against this. 

It may also be the case that there simply are very few high-reputation journals published in "minor" languages, and this may be tangled up with the difficulty of readership. I do regret that I never learned Russian well enough to read mathematics in it. Similarly, there are many important mathematical papers published in Japanese in Japan, and I cannot read them. I would not be surprised to learn that the same is true in China, but I cannot personally certify this.

But any reasonable scholar would certainly recognize the possibility that a good paper can be written in a language other than English. The question of its inaccessibility if written in a language not widely used in the subject at hand is different. Perhaps one could wonder about the wisdom of writing in a not-widely-read language, but, again, that's different from the science itself.