This question was posted on ResearchGate yesterday. I did a little investigation with their website and I found it gave good results for me. I am not sure how well it will work with your need, but you might want to try it. https://www.researchgate.net/post/Can_you_give_us_feedback_on_our_search_engine_with_Lab_Spend
Hi Joe, Thanks for your reply. I have checked both of them. I was looking for ingot or rod shape Mg and none of these company can offer 5N with this particular form.