It is related to the performance, size, shape and quantity of the product. Normally:
Ordinary blocks and cylinders (regular performance, moderate size)
≤1000pcs: 10-15 days; ≤10000pcs: 20-25 days
Ordinary rings and special shapes (regular performance, good size)
≤500pcs: 15-20 days; ≤5000pcs: about 30 days
For unconventional or large quantities of products, please confirm the lead time with the salesman when placing the order.