Recently, Yu Diamond announced that it plans to use the over-raised funds of 50 million yuan to invest in the establishment of Huajing Technology Co., Ltd., responsible for the R&D, production and sales of the micro-diamond line (diamond cutting line) project for the photovoltaic industry. This not only marks the company's formal entry into the new field of photovoltaic processing market, but also indicates that the photovoltaic processing industry may face a technological revolution. The advantages of diamond cutting line are obvious. The diamond is involved in the wafer cutting field in the photovoltaic industry chain. Silicon wafer cutting is a key part of the solar photovoltaic cell manufacturing process. The traditional cutting method is a three-body cutting process. The principle is that after the cutting liquid is mixed with the blade silicon carbide, it is sprayed on a very fine cutting wire, and the cutting wire is moved at a high speed to achieve a cutting effect. The diamond cutting line process replaces the raw material silicon carbide and cutting liquid into electroplated diamond. According to relevant data, the biggest highlight of this new process is energy saving and environmental protection, which can greatly reduce the generation of waste wire saw and waste mortar. And it is easier to recover the polysilicon in the waste. According to the current three-body cutting process, about 40% of the polysilicon is not used and is wasted in the waste. If diamond wire cutting is used, the polysilicon can be separated and recycled by means of combustion, and a water-soluble coolant can be used for recycling. At the same time, the new process will greatly increase the cutting efficiency by 140%, which is about 38% lower than the traditional process. The photovoltaic industry is based on the compression of costs to win the competitive advantage and the living space of the industry attributes, which determines that downstream PV manufacturing enterprises have strong sensitivity to new processes, and have strong motivation to adopt technologies that can effectively improve production efficiency to prevent Eliminated in the competition to reduce costs. It is reported that the diamond cutting line has the advantages of high efficiency and long life, which can help downstream enterprises to effectively reduce costs. At present, there is a precedent for large-scale application of diamond cutting lines overseas. Asahi Diamond, a leading Japanese diamond tool company, launched diamond wire products in 2006. In 2009, it achieved large-scale sales in the Japanese market and the Taiwan market, and has reached the capacity supply ceiling. The company plans to achieve 400% capacity expansion each year from 2011 to 2012. The breakthrough in the scale of benefits of diamond cutting lines seems to be getting closer and closer to the large-scale application of wafer cutting. It is understood that the international photovoltaic equipment giant Meyerberg has confirmed that it has carried out technical testing of diamond wire in the production bases of many customers in Europe and the United States, and predicted that the sales of its diamond cutting machine will account for 50% of the company's revenue in the near future. %. According to the reporter's understanding, diamond giants at home and abroad have been eager to test the fast-growing photovoltaic industry market, and they all expect to gain a share of the global market capacity of tens of billions of dollars each year. Because the process still has some technical difficulties, the instability of product quality has restricted the breakthrough of large-scale benefits, making this technological revolution progress slowly. At present, only a few manufacturers in the world have mastered the diamond cutting line technology. Except for Japan's Asahi Diamond, which has a major market share, other overseas companies are still in the process of finishing the production and mass production. If the future diamond cutting line can completely replace the traditional steel wire process, Yu Diamond will be the pioneer and beneficiary of this revolution. There are three major technical barriers in the product development of diamond cutting lines. Among them, the micron-sized diamond micropowder manufacturing process that guarantees the cutting precision is currently only available to leading companies such as Yu Diamond and Yellow River Cyclone. The electroplating process is to ensure that the diamond micropowder can be evenly and firmly plated. The key technical links on the thin steel wire line, and Yu Diamond conducted a long-term independent research and development on this technical problem, and made some breakthroughs. According to the announcement, Yu Diamond plans to put into operation and achieve production of the project within one and a half years. The production capacity will reach 13.4 million km of PV diamond wire for production of 13.3 million km/year for cutting silicon ingot and 0.12 mm diamond line for 132,000 km/ It is used for cutting silicon wafers. It is expected to bring annual revenue of 155 million yuan and profit of 53.92 million yuan. If the project construction, product production and market launch are carried out simultaneously, the company will maintain a basically synchronized development schedule with overseas competitors and will occupy a high position in global competition.
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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