For $29/mo, we provide access to advanced level technicians who will answer your questions on any Macbook board related matter to the best of their knowledge promptly & walk you through how to solve your problem so you can deliver a working board to your customer.
I already mentioned on the forum.
In my opinion, the best option for CD3215 chips, is buying "wing boards" in Aliexpress.
You may expect 10-20% of bad chips, but all are original at least.