China's non-ferrous metal products increased by 5.8% in the first quarter.

Recently, the National Bureau of Statistics released relevant data showing that in March 2012, the added value of industrial enterprises above designated size increased by 11.9% year-on-year (the growth rate of the added value is the actual growth rate after deducting the price factor), which is 0.5 percentage points higher than that in January and February. . From a ring comparison, in March, the added value of industrial enterprises above designated size increased by 1.22% from the previous month. In the first quarter, the added value of industrial enterprises above designated size increased by 11.6% year-on-year. According to the output of the products, the ten non-ferrous metals were 2.94 million tons, and the average daily output was 95,000 tons, an increase of 3.3%. In the first quarter, it was 8.4 million tons, a year-on-year increase of 5.8%. In terms of industries, the non-ferrous metal mining and dressing industry increased by 31.1% year-on-year; the non-ferrous metal smelting and rolling processing industry increased by 21.3%. In terms of purchase prices of industrial producers, non-ferrous metal materials and wires fell by 4.0% year-on-year in March and fell by 3.3% in the first quarter.

Centrifuge Tube Rack

At present, in the process of isolation and preparation of various stem cells from various tissue sources, Centrifuge Tubes with a volume of 15ml and 50ml are used.
It is one of the low-value consumables with high usage rate. It is generally installed on a dry foam rack with the package or in bulk. When used, it is taken out by the operator and placed on the plastic centrifuge tube rack in the ultra-clean workbench. The common centrifuge tube rack can only make the centrifuge tube stand upright. When transferring liquid or needing centrifugation, the operator should hold the centrifuge tube in the left and the night gun or aspirator in the right. If it is necessary to transfer a large amount of liquid reagents or perform gradient centrifugation operations, such as density gradient centrifugation to separate mononuclear cells, the operator needs to hold the centrifuge tube with the right hand for a long time and tilt the centrifuge tube, which often causes the operator's wrist joint pain. At the same time, it will also affect the liquid superposition effect, which will easily lead to the mixing of liquids of different densities, resulting in the failure of the experiment.

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