How to evaluate the professionalism of a volleyball manufacturer? Five key points to consider
Custom volleyballs are not standard products; the supplier's process capability, material selection, and quality control procedures directly determine the quality of the finished product. This article helps you establish an actionable supplier evaluation framework from four dimensions—comparison of heat-bonded versus machine-sewn construction, selection of PU leather and bladder materials, sample testing, and after-sales verification—to reduce the risks of bulk procurement.