A sewing machine is used to stitch the fabric and other pliable materials together with threads. The different parts of a sewing machine and its various functions help the Operator to know the functioning of a sewing machine. There are different types of sewing machine used in the manufacturing of garments and other articles. Some sewing machines are larger, faster, more complex, and have wide range in their size, cost, appearance, and task.

Solar Freezers are now used in several end-use applications such as households, dairy, research-labs, medicals, and more. It is a freezer that transfers solar energy into thermal energy for providing low temperature. The basic components present in solar freezer include solar array, panel support structure, battery (optional), and freezer. Solar-battery based and solar-direct drive solar freezer are the most common types used in different end-use applications.

Surge protection devices (SPDs) are designed to protect electrical appliances from voltage spikes. SPDs limit the voltage supplied to an electric device by either blocking or shorting any unwanted voltages above a safe threshold limit to the ground. They are used in automatic control buses, electric power supply networks, telephone networks, and various communication systems. The key factor that drives the SPDs market includes increase in demand for usage of electrical and electronics appliances in commercial & residential sectors. Moreover, high costs incurred due to electrical equipment downtime have also encouraged the adoption of SPDs as it provides safety in industries and in the domestic sector. The key factors that hamper the growth of this market are lack of awareness among small scale manufactures and competition from uninterrupted and non-fluctuating power supply systems. On the contrary, growth in awareness for need of SPDs, rapid industrialization, and power supply issues in developing countries are anticipated to provide lucrative opportunity for the market.

The dynamic cleaning equipment industry has witnessed a paradigm shift over the years in terms of trends and challenges across the globe. The cleaning industry is constantly evolving with micro and macro-environmental factors. It is also externally shaped based on the equipment and technology available in the market. With considerable upgrades in business models and operation techniques, the market will witness further traction supported by stringent protocols and corporate policies. The global cleaning equipment market was valued at approximately $26.01 billion in 2019. The professional cleaning equipment market was $8.69 billion, and that for the consumer cleaning equipment market approximately $17.32 billion in 2019. Highpressure washers accounted for a 10.39% share of the global cleaning equipment market in 2019. Accordingly, the pressure washers that form an integral component of the cleaning equipment industry are expected to grow 1.29 times during the forecast period. For battery-powered pressure washers, the contract cleaning market is expected to shape the growth during the next five years.

Intravenous (IV) therapy helps to deliver medications, fluids, and other nutrients directly into the body through veins. IV therapy is used during lifesaving therapeutic treatment and in wellness treatment. Since ancient times, blood therapy has been around, and blood has been viewed as a therapeutic substance. However, lack of proper understanding of blood types, infectious agents, and the absence of ideal materials such as plastics held back IV therapy for centuries. Later, IV therapy became the fastest way of delivering blood products, medications, vitamins, or other vital fluids. IV therapy is usually provided to the patient with the help of an intravenous catheter, either through an injection with a syringe or infusion.

2021 年初至11 月30 日，中证军工指数上涨15.04%，涨跌幅排第10位，但季度波动较大，Q1 因预期流动性收紧，板块高位回调，下跌达15.46%；Q2、Q3、Q4 在军工业绩逐季兑现下开始反弹，中证军工指数近三季度涨幅分别达10.1%、7.8%、19.6%，单季度上涨靠前。

本报告通过分析当前API数据管理受限于API数据的种类、数据源、格式、接口整合及数据安全合规交换等问题，提出利用数据路由器（API安全）的多协议数据接入与转换、权限控制、数据脱敏、隐私保护、智能实时预警、安全审计等能力，解决API管理过程中存在的标准不一、管理烦琐、传输安全、隐私合规等问题，为数据供需双方提供安全、高效的数据安全交换解决方案。用技术平衡数据价值与安全合规监管，最大化利用数据，并促进数据流通，为数据安全应用提供保障，促进数据交易等新兴服务规范发展。

本文通过理论分析与论证，构建技术获取型境外并购双方企业的技术联系性、技术整合及其交互关系对并购创新绩效影响的主要理论框架，探讨其作用机制，提出相应的假设，为后面的研究奠定理论基础。

目前，抗凝治疗作为症状性房颤的一线治疗方案，在各个国家的治疗成功率和覆盖率均不尽如人意，但左心耳封堵术远期疗效已被多个临床试验证实，并迅速在全球得到普及。本文首先分析了国外左心耳封堵器市场进展，在梳理相关数据基础上，指出我国目前行左心耳封堵术的患者数量居全球第二。2018年我国可完成左心耳封堵术的医学中心数量超过200家，其中已完成超过100台左心耳封堵术的医疗中心有11家。左心耳封堵的治疗主要集中在上海、北京、浙江、江苏等沿海发达地区和省会中心城市。最后，本文认为左心耳封堵器在我国市场应用前景广阔，经济价值潜力巨大，基层执业医师能力的提升有利于促进左心耳封堵术的基层推广等。