Dear Sir, I am Gourav GARG from M/s Chandigarh Chemicals, Jamalpur Road, Tohana, Distt- Fatehabad, Haryana (INDIA).Chandigarh Chemical is a selling zinc sulphate heptahydrate, zinc monohydrate, z for long years. We have good sources all around the world. Note: Please do not hesitate to contact me:Best RegardsGouravGargChandigarh Chemicals919813370210India