Dongguan Jiuduo Plastic Products Co., Limited has developed the business in a brand-new way and has won many honorary qualifications in the industry. Now we enjoy a large influence in the industry. Jiuduo is located in the place with traffic convenience. Besides, there are logistics companies leading to domestic and international markets. All this make an advantageous condition for the transportation of goods. In addition to providing high-quality products, Jiuduo also provides effective solutions based on the actual conditions and the needs of different customers. Jiuduo can provide OEM/ODM services according to customer needs. We have been engaged in the production of tablet cover for years. With advanced technology and strong production capacity, we can guarantee the sufficient supply and timely delivery of tablet cover. Customers can rest assured to cooperate with us.
What is the internal material of the hard disk? How much alloy or plastic? Disk disk is the medium for carrying data storage in the hard disk,The hard disk is superimposed by multiple disks,Separated by washers from each other.The hard disk is based on solid and durable materials,It is attached to magnetic substances,The surface is processed fairly smoothly.Because the disk is rotating at high speed inside the hard disk (5400 rpm, 7200 rpm, 10000 rpm,Even 15000 turns ),Therefore, the material hardness and wear resistance of the plate are very high,Therefore, alloy materials are generally used,Mostly aluminum alloy.The hard disk is constantly improving with the development of the hard disk,Early hard disk discs used plastic materials as disk bases,Then apply the magnetic material to the plastic disk base to form the disk of the hard disk.Later, with the increase of the speed and capacity of the hard disk, the metal disk-based disk,The disk base of the metal material has higher recording density and stronge
What are the production steps of pure water? Raw water tank-raw water pump-multi-media filter-activated carbon filter-water softener-Double-stage precision filter-high-pressure pump-RO reverse osmosis pure water system-water vapor mixer-ozone sterilization machine-UV sterilization machine-stainless steel pure water tank-semi-automatic bottle punching machine (One Rinse, second rinse) -CGS normal pressure filling machine (or CGB normal pressure filling machine )-Full automatic capping machine-Sticky label-Packing.(1) first-stage pretreatment system: quartz sand media filter is used,The main purpose is to remove the substances that contain sediment, rust, colloidal substances, suspended solids and other particles in the raw water that are harmful to the human body at more than 20 μm,Automatic filtering system,Imported brand automatic control valve,The system can automatically (manually) perform a series of operations such as backwashing and positive flushing.To ensure the quality of water producti
