Time flies, it's already the end of June in a blink of an eye, and it's already half a year since 2021. In the first half of this year, the whole country continued to adhere to the work of epidemic prevention and resistance campaign, and China was dealing with and solving the problem; COVID-19”, This has been designated by the World Health Organization as; Major public health emergencies; In our work, we have demonstrated the responsibility of a major country, not only setting a model for countries around the world to fight against the epidemic, but also making important contributions to the international community's response to the epidemic, showcasing the image of a responsible major country. Although we have also gone through lockdowns, isolation, nucleic acid testing, vaccination, and so on, it is precisely because of such response measures and solutions that we have the current work, study, living environment, and state. Compared to other countries, as Chinese people, we are truly happy.

In addition to expressing emotions, let's also summarize our work for six months. As a laboratory worker, I often use metallographic equipment such as cutting machines, inlaying machines, polishing machines, microscopes, etc. During the grinding and polishing process of sample samples, after multiple experiments, I have discovered a useful, practical, and durable metallographic polishing cloth - the original imported QMAXIS (Kemai) polishing cloth from the United States. This metallographic polishing cloth is made of various high-quality polishing fabrics such as woven fabric, non-woven fabric, flocked fabric, chemical corrosion resistant synthetic materials, etc. For different materials and polishing stages, polishing cloths with different weaving properties can be selected, combined with polishing liquids or pastes with different abrasives and particle sizes, to achieve surface effects at different process stages. This series of polishing cloths can be divided into coarse polishing, medium polishing, and fine polishing according to different technological processes. Coarse polishing - PlanCloth is a velvet free polishing cloth that is tightly woven with polyester fiber and nylon, paired with 6µ Diamond polishing liquid of m and above shall be used for polishing iron base, Thermal spraying metal coatings and hard materials. Middle polishing - SilkCloth is also a velvet free polishing cloth, tightly woven with pure silk, paired with 9µ M-1µ Diamond polishing liquid of m and above is especially suitable for polishing medium such as polishing paste and liquid polishing wax, and is used for polishing Ferrous, nonferrous metal, microelectronics, coating and rock materials. Fine Polishing - MicroMet Polishing Cloth This is a long velvet fabric woven with synthetic fibers and cotton backing, paired with 3µ Diamond, Al2O3, SiO2 polishing fluids of m and below should be used for polishing all materials. These different series of metallographic polishing cloths are the preferred polishing consumables for laboratories, which are economical, easy to use, and durable.