Precision Is Made, Not Just Sold.
Inside our Ningbo production base — every step is controlled, measured, and checked.
Who We Are
Winvera is a crown drill manufacturer and tap factory in Ningbo, China. Every crown drill, modular drill and WTP tap is ground, coated, inspected and shipped from our own production base — no trading middlemen, no unlabeled subcontracting.
Winvera is the export brand of Ningbo Yinzhou Yingfa Hardware Co., Ltd. Since 2014 we have supplied European distributors with factory-direct cutting tools: crown drills and modular drilling systems, plus WTP spiral point, spiral flute and nut taps. One factory, one quality system, one name on every batch.
How We Manufacture Drills and Taps
01 · CNC Grinding
Carbide blanks ground on 5-axis CNC machines to micron tolerances.
02 · Coating
WV3015 / WV3010 AlCrN & AlTiN PVD coatings for edge life.
03 · Inspection
Diameter, runout, geometry, coating — checked on calibrated equipment.