Can our company keep another company's materials if they haven't paid us?

The answer to your question would depend on what the contract between the parties here says.

You haven't asked a question, but typically, you can file an objection to an order like this.

If i don't show up for work for under 6 hours shift ,can the employeer fire me?

Yes, your employer can fire you for this.

My brother and I formed an S corporation. Now my brother try to take control of the whole corporation. I want out.

You may have various legal claims here, including breach of fiduciary duty, breach of contract, and related ones. You can file an action to...

How many hours an employee is a law to give you per day

Your employer can schedule you for as few hours as they would like for a given day.

Civil Suit for non-payment

You can file for malicious prosecution if you end up prevailing on the Cross-Complaint.

Do I have a case to sue my former employer because I was forced to resign after being wrongfully accused of a crime?

Assuming that you are an at will employee, no, this would not be a viable claim.

Can I sue plaintiff's lawyer for misstating facts in complaints in Superior Court in CA

No. Allegations in a lawsuit are protected by the litigation privilege.

Yes, this is legal for a supervisor to do, as rude as it might be. It may constitute assault, but from an employment law perspective, it is...

Unfortunately, there is nothing you can do to dispute this. Your employer has to right to fire you for this reason, even if the test was incorrect.