Why only negotiate for 3K? 3k before tax is just small $ and does not worth a negotiation.
"老公觉得还是低因为责任大工作量也会很大"
But you still work 8 hours per day, right?
"我倒觉得是个好的career opportunity"
Agree! If you haven't been a manager before, it's a good chance to learn management skills and gain leadship experience. You might want to focus on the career development part rather than the 3K salary difference.
-----
chemforbio.com