We have been buying 1,000 mesh copper powder from Dongguan Baolai Plastic Co. for years and have always had great service, and the quality of the powder is superior to others we have gotten from US and Indian suppliers. Our rep, Alice Chu is always responsive and fast, we have always gotten our orders in the US quickly, within 10 days usually. That's amazing compared to some vendors who take months. So grateful to have such a professional quality company to do business with!