If this recruitment company wants to ask you for some confidential information of the original company, it can't be given for legal reasons.
(1) Because you have left the original company now, if you disclose the information to the company, if there are some confidential information in it, then you may have violated the law. The original unit has the right to sue you after knowing this!
(2) Even if the recruitment company takes this condition as a bargaining chip, we can't do unnatural things, which is extremely immoral!
(3) Having a recruitment company may be testing your loyalty. If you provide these materials, your loyalty is very poor. If this recruitment company hires you, they will also worry that one day, when you leave, they will also hand over the confidential information of these companies to another company. This may also be a question for you from this recruitment company.