Be made of high-purity (above 99.5%) alumina ceramic, it can meet any strict requirements of semiconductor equipment with its features of wear resistance, corrosion resistance, low thermal expansion, and insulation. It can work in many kinds of semiconductor production equipment with condition of high temperature, vacuum or corrosive gas for a long time. Made from high-purity alumina powder, processed by cold isostatic pressing, high temperature sintering and precision finishing, it could reach the dimension tolerance to ±0.001 mm, surface finish Ra 0.1, temperature resistance 1600℃. Here is the characteristics of alumina ceramic with different purity.Spray Granulation →ceramic powder → Forming → Blank Sintering → Rough grinding → CNC Machining → Fine Grinding → Dimension Inspection → Cleaning → PackingPlace of Origin: Hunan, China Material: Alumina Ceramic HS Code: 85471000 Supply Ability: 50 pcs per month Lead time: 3-4 weeks Package: Corrugated box, foam, carton Others: Customization service availableProfessional online service team, any mail or message will reply within 24 hours. We have a strong team provide wholehearted service to customer at any time. We insist on Customer is Supreme, Staff toward Happiness. Put the Quality as the first consideration; Advanced production equipment, strict quality testing and control system to make sure superior quality. Competitive price: we are a professional auto parts manufacturer in China, there is no middleman's profit, and you can get the most competitive price from us. Good quality: good quality can be guaranteed, it will help you keep the market share well. Fast delivery time: we have our own factory and professional manufacturer, which save your time to discuss with trading companies. We will try our best to meet your request.1.Shipping ● EXW/FOB/CIF/DDP is normally; ● By sea/air/express/train can be selected. ● Our shipping agent can help arrange shipping with good cost, but the shipping time and any problem during shipping couldn’t be guaranteed 100%. 2. Payment term ● Bank transfer / TT ● Need more pls contact 3. After-sale service ● 8:30-17:30 within 10 min get response; We will get back to you within 2 hours when not in office; Sleeping time is saving energy ● For give you more effective feedback, pls leave message, we will get back to you when wake up!1. How to apply for free samples? lf the item (you selected) itself have stock with lower value, we can send you some for testing, but we need your comments after tests. 2. What about the charge of samples? lf the item (you selected) itself have no stock or with higher value, usually double its fees. 3. How to send samples? You got two options: (1) You can inform us your detailed address, telephone number, consignee and any express account you have. (2) We have been cooperated with FedEx for more than ten years, we have good discount since we're theirs VIP. We'll let them estimate the freight for you, and the samples will be delivered after we received sample freight cost.