I've been ordering graphite hot zone products from XRD Graphite Manufacturing Co., Ltd for a few years now. I find their pricing very competitive, and my orders are shipped quickly. I have placed a half dozen, or so, orders since finding XRD Graphite Manufacturing Co., Ltd and have been satisfied with all of my transactions with them, as well as recommending them to my local colleagues. I will order from XRD Graphite Manufacturing Co., Ltd again, as needed.