According to relevant monitoring data, the methanol market was running weak on June 27. Currently Shandong Lunan area offer slightly reduced 10 yuan / ton, Hebei, Shanxi, Inner Mongolia, Shaanxi, Northeast China and other regions manufacturers factory prices firm, factory prices in Henan and other manufacturers continue to loose. In terms of ports, the methanol market in South China Port continued to decline. Methanol**: On June 27, methanol oscillated weakly and finished. Zhengzhou methanol 1309 main contract opened lower at 2582 yuan / ton, to close at 2589 yuan / ton, down 0.12%. The intraday trading range was 2582-2598 yuan/ton, 9222 lots were traded, and 5066 lots were held. The contraction volume was lightened up.
Methanol external disk: the day before, CFR China's closing price was 354-356 US dollars / ton, down 0.5 US dollars / ton; CFR Southeast Asian region closing price of 409-410 US dollars / ton, up 0.5 US dollars / ton; FOB Rotterdam closing price of 349 - Euro 350/t, unchanged; FOB US Gulf closed at 139.25-139.75 cents/gal, down 0.5 cents/gal.
There was no substantial improvement in the downstream market: prices in individual regions of formaldehyde fell slightly. Due to the negative impact of wheat harvesting and environmental inspections, Wen'an had about a dozen formaldehyde plant shutdowns. The demand for raw materials was limited; the performance of the dimethylacetate and acetic acid markets was poor, and the demand for raw materials was insufficient. There is a weakening trend. The methanol utilization rate continues to increase, coupled with the high level of port inventories, and the methanol supply in the latter stage is abundant. As a result, the contradiction between supply and demand may further expand, and short-term weaknesses or continuations may still exist.
Double Disc Grinding And Polishing Machine
Grinding and polishing are the same mechanical movement, the principle is the same. But for surface quality, the surface finish of polishing is higher than that of grinding. In fact, polishing fluid can be said to be the last process of grinding, grinding and polishing can be realized on the same plane polishing machine at the same time. Grinding is divided into rough grinding, fine grinding, polishing is divided into rough throwing, fine throwing. Most of the time, we have three processes to process the surface quality of products: rough grinding, fine grinding, fine polishing. With these three processes, the workpiece surface flatness, parallelism, roughness is quite high. Some customers do not have such high accuracy requirements, especially roughness requirements are not so high, so they only use the first two processes, or the fine grinding process. Specific to see the quality of the workpiece surface itself, as well as customer requirements to achieve the quality.
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