See how this 75ml leak-proof roller ball packaging brings practical value to body care and sunscreen projects. In this video, we walk through the YLD002010's dual-tone decorative cap, modular 4-piece build, and smooth-glide roller performance. Watch a close-up demonstration of its dynamic sealing against -0.08 MPa vacuum leak tests, plus insights into OEM scalability, custom color matching, and automated capping line efficiency for B2B buyers.