Hand Warmer, Body Wamer, Knee Warmer manufacturer / supplier in China, offering Customized Hand & Foot Warmer Pad Long-Lasting Heating Patch Warming Pack for Working Sporting, OEM Instant Heating Pad for Hands & Feet Flexible Warmer Patch Warming Pack Fatigue Relief, OEM Wearable Knee Joint Warmer Patch Long Lasting Heating Pack Warming Pad for Pain Relief and so on.