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Consumables must be replaced over time when using screw air compressors. Basically, it’s three filters and one oil element: the oil filter element, the air filter, the oil filter, and the lubricating oil. In the past, most of these consumable technologies were in the hands of foreign companies; the three filter brands are MANN and Sorga. The lubricating oil is Shell, BP, and Total. Wait, in recent years, with the rise of domestic manufacturers of screw air compressors. Domestic consumable manufacturers have also emerged rapidly, and due to their low prices, they have become the preferred choice for domestic air compressor manufacturers. Currently, the manufacturers of the three filters that come standard with domestic air compressor producers are mostly concentrated among the following companies. 1. Supplied in conjunction with Shanghai APD air compressor manufacturers. It was a pioneer in domestic air compressor filters, boasting advanced technology and strong capabilities. Its production is also carried out in several factories; the filter elements produced in Shanghai are of good quality, and they are recommended for use. The production quality of factories in Guangdong is average, and friends from air compressor factories in that region say that there are some issues. This is the situation. 2 Shanghai Chao Man. Supplied by air compressor manufacturers; good quality at a moderate price. It is recommended to use 3 Qianhai Sanfeima. Supplied by air compressor manufacturers; the filters have good quality and are reasonably priced. It is recommended to use filter elements produced in cities such as Tianjin and Bengbu; there isn’t much experience with these, so it’s necessary to consider the technical capabilities of each manufacturer. 5 Filter element manufacturers in Henan and Hebei. In these two areas, there are many manufacturers of car air filters who have started producing air compressor filters. The prices are very low, the quality is inconsistent, and problems occur on a large scale. For compressor lubricants, there is still a certain gap between domestic products and imported brands at present. It is recommended to use original manufacturer’s oil, as using alternative lubricants can easily lead to coking in the machinery. I work in this industry; those who are interested in this topic can exchange ideas with each other.