What is the proportion of material cost to total production cost for seal packaging ?

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How to use and disinfect air filters? Filter operation instructions guide gas filter usage instructions installation steps 1 2 thoroughly clean the filter housing; clean the impurities in the gas pipeline, follow the correct workflow, connect the filter housing to the filter system, in the pipeline. Pay attention to the direction of the inlet and outlet port when connecting to ensure that the filter element is outside air intake and inside air outlet; 3 open the plastic bag at one end of the filter opening to check whether the O-ring is in good condition; 4 5 6 wet O-ring and filter seat Jack with appropriate Moistening Agent (such as water); hold the filter element close to one end of the O-ring and vertically insert the filter socket into the filter socket; insert all the filter elements and remove the filter bag. the multi-core filter needs to be fixed with the upper pressure plate, and then the metal cover is installed. precautions 1 2 should be used to prevent pressure shock and prohibit reverse pressure

Front water purifier which brand is good? At present, there are many stickers for the front water purifier, and other processes are not difficult. the key technology is in the filter screen. although there is a small filter screen, the core components are in this piece, like the chip of electronic equipment. Directly related to the quality of the filter. Lydsey's filtration and purification technology is the top in the industry. many key projects use lydsey's technology, such as the sediment water flow dam in the Three Gorges Reservoir area and the second phase of Xiaolangdi Water Transfer and sand purification project. Some well-known international water purification manufacturers many big filter manufacturers are using their filter technology. Therefore, it is best to choose the pre-water purifier with the manufacturer's excellent filter technology. High prices are generally better, and the truth of the goods is always there.