In the field of closures, either water/soft drink cap or flip top cap, even for cosmetics, VOLUME and COST are always the major factors of success. Making water closure, running by injection or compression molding is a dilemma from different points of view. The injection molding can provide flexibility for various kind and sizes production. Compression molding provide fast cycle but the roundness of each cap would be a critical point. Jon Wai provide injection molding solution for closure production, including fast production, slitting, on-line inspection.