Since 2001 Shanghai World Biotech has been a leading manufacturer of Hot & Cold products, which has combined itself with researching,producing and marketing.We take this market knowledge and product expertise and build it into every product we make. Through patented technologies, unique materials, and flexible manufacturing we can make the right product at a value that will astound you every time.  Our all-around product lineup includes hot/cold packs, hot packs, instant hot packs, ice packs, ice boxes, eye masks, shoulder packs, bottle coolers, insoles, etc.   Shanghai World biotech guarantees quality because every product we make upholds strict international standards:*Class 1 & 2 Medical Device manufacturer, registered with the FDA and Health Canada *ISO13485 Certified/CE Markings *In-house QA/QC/Regulatory *A reputable customer base