Recently, the author learned from the State Intellectual Property Office that the four technologies developed by Liaoning Dandong Tianyuan Light Industry Packaging Machinery Co., Ltd. for the production of composite cardboard have obtained national invention patents. These four patents are
Read moreAt the end of last year, the price of mahogany raw materials experienced a round of ups and downs. The industry rumored that the price of raw materials fell. Under the atmosphere of strict control of felling of mahogany raw materials and the wait-and-see in the domestic finished product market, th
Read moreAbstract All domestic and foreign economic situations have shown a conclusion: China's traditional manufacturing industry must be strategically upgraded, otherwise it will lose its comparative advantage. For companies that fight in the domestic market, normative development is the key. Th
Read moreLead is a metal element that can be used as a material that resists sulfuric acid corrosion, anti-gamma rays, and batteries. Its alloys can be used for lead characters, bearings, cable sheathing, etc., and can also be used as sports equipment shot put. Lead can also refer to a writing instrument m
Read moreIn recent years, the long-term overuse of chemical fertilizers and the use of organic fertilizers have been less, resulting in a series of problems such as soil compaction, fertilizer conservation, water conservation, and buffer capacity reduction. With the decline in land fertility, the i
Read moreThe chromic acid anodic oxidation method is mainly used for the processing of high-precision precision parts. The oxide film obtained is thick (2-5 μm). The film is soft and has good toughness. It can maintain the original precision and finish of the parts and basically does not reduce the fati
Read moreDue to the research and development of production-oriented production characteristics, most of the product's machining production tasks have the characteristics of small batch, short cycle and high precision. How to ensure the machining accuracy of the workpiece, improve the processing efficien
Read moreNetwork cameras function as eyes in security monitoring. Their use environments are complex. They are mostly outdoors and in bad places. If they are used improperly, the camera's aging and scrapping speeds are bound to increase. For the unique structure of the network camera, there are the foll
Read moreIt is not advisable to apply biological fertilizer to soils with high sulfur content and rust fields because sulfur can kill biological bacteria. For paddy paddy fields, it is generally not necessary to apply, and the effect of spraying is more obvious. The optimum temperature for applying the
Read moreMain products: public broadcasting , broadcasting amplifier , broadcasting equipment , lawn speaker sound failure performance for the operation of the function keys, there is a corresponding status display, but no signal output. When overhauling an amplifier with a protection circuit, it should be
Read moreThere are a lot of places where you need to use hinges for interior decoration, such as interior doors and windows, furniture cabinets, etc., so it is not eye-catching, but it is a piece of hardware you absolutely cannot leave. Finding out the classification and characteristics of hinges is more c
Read moreBuying a house is a big expense for the salaried people. There is not much money on hand but they are not willing to make it. Is there any way to correct it? If you want to install a satisfied and cheap home, you don't have to do the following 8 things. Griste Solid Wood Furniture Koala Small
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