On March 11th, the Customs officers of Yiwu Customs, a subsidiary of Hangzhou Customs, seized a disc-shaped metal saw blade marked “DEWALT†from the goods with the name of acrylic beads and decorative pendants. It was suspected of infringing on the well-known American tool manufacturing brand “DEWALTâ€. "The intellectual property rights, a total of 1050 tablets. 3.15 Before and after the Consumer Rights Day, Yiwu Customs attacked heavily, increased attention to high value-added, very-unknown brands and state-owned brand products, strengthened education and training in the customs declaration industry and freight forwarding industry, and further strengthened the protection of intellectual property rights.
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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