[Resolved]  Star Health Products — Heat pad not working

I have purchased 'Heat Pad' from Star health products from an exhibition. It just worked fine only once where upon for reuse they had given instructions to boil the heat pad without direct contact with vessel for 10 minutes or until the crystal dissolves, which I have tried many a times. Even after heating the pad for more than 10 minutes many a times, the cyrstals does not dissolve nor does the products work. Please be aware of this Fake Products company called Star Health Products, which I presume all the products are fake.