Zhuhai Gree Electric Appliances Co., LTD., founded in 1991, is an international household appliance enterprise integrating R&D, production, sales and service. It owns Gree, TOSOT and Jinghong three brands, and specializes in household air conditioners, central air conditioners, air energy water heaters, mobile phones, household appliances, refrigerators and other products. In 2016, Gree Electric Appliances achieved a total revenue of 110.113 billion yuan, a net profit of 15.421 billion yuan, and a tax payment of 13.75 billion yuan, ranking first in tax payment in China's home appliance industry for 15 consecutive years, with a cumulative tax payment of 81.413 billion yuan. It has been listed on Fortune's "Top 100 Listed Companies in China" for nine consecutive years. Gree Electric Appliances' "Gree" brand air conditioner is the only "world famous" product in China's air conditioning industry, with business in more than 100 countries and regions around the world.

On December 30, 2008, Gree won the award of "China's Most Competitive Brand List" by virtue of its good brand impression and brand vitality in the "2008 World Brand Value Lab Annual Award "held by the world's authoritative brand value research institute -- World Brand Value Lab, winning widespread praise and support from consumers.

In the first half of 2012, the company achieved operating revenue of 48.303 billion yuan, with a year-on-year growth of 20.04%; Net profit of 2.871 billion yuan, a year-on-year growth of 30.06%, continued to maintain a rapid and healthy development of the good situation.

Gree Electric Appliances' "Gree" air conditioner is the only "world famous" product in China's air conditioning industry, with business in more than 100 countries and regions around the world. Annual production capacity of household air conditioners exceeds 60 million units and annual production capacity of commercial air conditioners exceeds 5.5 million units. Since 2005, Gree air conditioning production and sales for seven consecutive years leading the world.

Gree Electric Appliances is committed to providing global consumers with leading technology and excellent quality air conditioning products. It has 9 production bases in Zhuhai, Chongqing, Hefei, Zhengzhou, Wuhan, Shijiazhuang, Wuhu, Brazil and Pakistan, with more than 80,000 employees. So far, it has developed 20 categories, 400 series and more than 7,000 varieties and specifications of products, including household air conditioners and commercial air conditioners, which can fully meet the various needs of different consumer groups. It has more than 6000 technical patents, among which more than 1300 invention patents. A series of "international leading" products developed independently include ultra-low temperature digital multi-unit, high efficiency DC frequency conversion centrifugal chiller, multi-function floor heating type central air conditioner, 1 Hz frequency conversion air conditioner, R290 environmental refrigerant air conditioner, ultra-high efficiency constant speed compressor and so on, which fill the gaps in the industry. It has become a model from "Made in China" to "Created in China" and won wide popularity and influence on the international stage.

"An enterprise without innovation is an enterprise without soul; An enterprise without core technology is an enterprise without a backbone, and a person without a backbone will never stand up." Looking forward to the future, Gree Electric Appliances will adhere to the development idea of "self-development, independent innovation, self-owned brand", with the goal of "creating a global leading air conditioning enterprise and achieving a century-old world brand of Gree", and make more contributions to "Creation in China".

Qingdao Ruijie Intelligent Instrument Co., Ltd. is located in the advantageous geographical location, beautiful environment of the coastal city of Qingdao, is a collection of research and development, design, production, marketing and technical services in one of the private science and technology enterprises. Focusing on the new energy vehicle industry, the company provides special test power supply, test equipment, automatic test system and test solutions for power lithium batteries, charging piles, vehicle inverters, motor and other components.

Strong technical force, the main R & D personnel have many years of instrument development experience. Since its inception, the company is market-oriented, customer-centric, accurately grasp the market segments in related fields, high starting point, high standard has developed automatic test system, lithium battery test equipment, power measuring instrument, safety test equipment, AC and DC power supply five categories of products, in the stability, reliability, operability and main performance indicators and other aspects of enterprising.

The company's products are mainly used in lithium battery manufacturing, charging pile, electric vehicles and other emerging industries, but also widely used in household appliances, power adapters, motors, power tools, information communication, lamps, electronic transformers, electronic components, low-voltage power distribution and other industries, as well as metering, quality inspection, commodity inspection and other national institutions and research institutes.

Qingdao Ruijie has provided safety and regulation comprehensive test system, computer board simulation system, switching power supply test system, transformer control system, motor test system and other related test products for major production bases of Gree. The quality products and services have been recognized by customers.