Whether the use of copiers, printers, etc, the quality requirements of carbon powder is very high, but the market at present, 施chǎng) Is still exist on fake ( liè) The carbon powder sales ( 销售) , if use the carbon powder, will not only copies of copies made of poor quality, but also can cause the damage of the machine. Accordingly, buy high quality toner is a must. If you want to choose high quality carbon powder suppliers, is first selection. City company is a professional engaged in various engineering copiers, printers toner production ( 生产) Run the company, the production of carbon powder, beautiful and easy, moistureproof pressure, easy to carry and was welcomed by the masses of users and choose to buy. Said that for the user, must learn to discern between true and false carbon ( C) Powder, avoid buying inferior carbon powder, the following mentioned points from the methods of quality identification method is for your reference: a, observe carbon ( C) The appearance of the powder. High quality toner standard appearance should be black without impurities, and no coagulum. Second, the test ( TestMeasure) Liquidity. Printer toner many drums in original toner after use, the user can add after used again, so also is to have separate toner for sale on the market. By adding toner by oneself, will reduce the use of the user supplies cost. Carbon powder polymerization is a kind of fine chemical toner technology, it includes suspension polymerization, emulsion polymerization, detail capsule, dispersion polymerization, compression polymerization, chemical pieces. High quality toner liquidity generally is very good, can take 20 g of carbon powder on the white paper, then the rocking back and forth, you can observe the good and bad liquidity. Illiquid carbon powder will directly affect the blackness, low ash, the heat transfer rate. Method 3, smell the smell of carbon powder. Color is used in the paper in the laser printer toner fixing powder material. Black toner by bonding resin, carbon black, electronic agents, additives such as ingredients. Still need to add other color in the color toner pigment, etc. The smell of the high quality carbon powder should be no odor or microstrip have aromatic taste. Import the smell of the carbon powder with sweet taste, and the smell of the domestic carbon powder most serious with tar, which made a lot of smell during printing, or copying, is feel uncomfortable.