Industrial activity in China is slowing (never good for commodity prices) and zinc inventories are up.
H2 for metals is looking bleak in my opinion, but I believe supply constraints in zinc will offset falling demand.
In any case, I think we'll see another spike at the end of this current correction. It may be a good entry point for a short term trade.
If you're looking for a near-production zinc play with exploration upside I'd recommend RVR