Sd-195 diesel engine replacement valves, catheters, pistons, piston rings, fuel injectors, after the plunger can not start, or the operation is not normal, knocking cylinder sound and crash sound is quite serious, demolition found: valve rod always bent At the top of the piston there is an imp…

The harvesting season of Artemia eggs is generally in the fall, but there are also a few Artemia eggs that can be harvested in the spring. In addition to the parasitizing dormant eggs produced by Artemia Monodon from California, most of the Artemia eggs produced in other regions are floating e…

First, nitrogen deficiency Chinese herbal medicines lack of nitrogen, the plant leaves old leaves yellow, fall off, the plant was pale green to yellow-green, the leaves become smaller, the elongation of new shoots is severely blocked, and premature aging also occurs. Supplementary treatment me…

Traditional bee breeding speed is slow, its own insulation capacity is poor, due to changes in the external environment caused by bee colony reduction; the new bee spring propagation method has the advantages of rapid development of the group potential, ability to resist adverse external envir…