Work Permit Rule &regulations

[hemabkk]

I have "B" visa with work permit and visa on this for 1 year.if I changed my company then does the visa for old company can transfer to new company or not

if not what I have to do can anyone advise me

[digitalchromakey]

I have "B" visa with work permit and visa on this for 1 year.if I changed my company then does the visa for old company can transfer to new company or not

if not what I have to do can anyone advise me

Your post's wording is not clear.

1) Do you have a 1 year non immigrant B visa which you obtained overseas?

2) Do you have to go to the border every 90days?

3) Do you have an Extension of Permission to Stay - where you report your address to the local Immigration Dept every 90 days?

If you can deal with these three points first then someone can post the answer to you question.