As an export-oriented enterprise, the company mainly provides professional cotton socks design, manufacturing and services for global well-known brands and global well-known retailers such as UNIQLO, Decathlon, Metro AG, Carrefour, etc. More than 90% of its products are exported to overseas markets such as Europe, Australia and Japan. In recent years, the company has accelerated the pace of intelligent factory construction, actively implemented intelligent manufacturing, integration of industrialization, energy conservation and carbon reduction, and green development, effectively improving production efficiency and product quality. Currently, it is one of the largest cotton sock production enterprises in China for export. The company has passed the ISO three system certification, "Made in Zhejiang" certification, and has been awarded many honorary titles such as the first batch of machine replacement demonstration enterprises in Zhejiang Province, the first batch of high-tech enterprises in Zhejiang Province in 2017, the management innovation pilot enterprise in Zhejiang Province in 2016, and the provincial integration pilot enterprise in 2016.
Raw liquid colored nylon - recycled yarn, spun from recycled cola bottles, etc., is woven into socks, with recycled yarn accounting for about 10%. Each ton of recycled yarn reduces wastewater by 32 tons and reduces carbon dioxide emissions by 1.2 tons compared to the manufacturing process of raw yarn. The annual use of 90 tons of recycled yarn is equivalent to a reduction of 108 tons of carbon dioxide emissions.
European and American customers request to pass the FEM module certification of the HIGG system in Europe and America, and entrust a third party to conduct on-site verification and scoring of our company's energy consumption data such as water, electricity, and steam every year. Through nearly four years of hard work, our company's rating has increased from an initial 17.9 points to 57.7 points. This module certification includes industry benchmarks, energy, waste, water, chemicals, and verifies the company's ability to impact the environment through an assessment of its management capabilities.
In 2018, an investment of 22 million yuan was made to construct a constant temperature and humidity air treatment system. By comparing the enthalpy values of indoor and outdoor air, the system automatically selected air with low enthalpy values for cooling and humidity control through water film dust removal before being sent to the workshop. In summer, the operating energy consumption of the refrigerator was reduced by 15%, saving 432000 kWh of electricity annually, equivalent to reducing 328 tons of carbon dioxide emissions. In winter, the hot air inside the circulating workshop is heated without using a heat source, saving 9000 tons of steam annually, equivalent to reducing 2430 tons of carbon dioxide emissions. Improve product quality, increase the qualification rate from 94% to 97%, and reduce waste yarn by 180 tons annually.
In 2018, an investment of 1.885 million yuan was made to retrofit the original hosiery machine with a 1.1KW suction fan to 40 hosiery machines sharing a 30KW suction fan. The frequency of the motor is controlled by adjusting the frequency of the frequency converter through a pressure sensor to achieve constant voltage. Reduce power by 25% and energy consumption by 36%. Annual electricity savings of 7.4646 million kWh, equivalent to reducing carbon dioxide emissions by 5658 tons.
In 2018, an investment of 800000 yuan was made to use rare earth insulation for steam pipelines. The surface temperature of conventional insulation materials is about 18 ℃ higher than room temperature, while the surface temperature of rare earth insulation is only about 3 ℃ higher than room temperature. The temperature difference between the two is about 15 ℃, and the annual use of steam is about 28305 tons. The annual reduction in steam heat dissipation loss is 44 tons of standard coal, equivalent to reducing carbon dioxide emissions by 119 tons. In 2020, 2 million yuan was invested in the technical transformation of steam condensate recovery, with an annual recovery of 9000 tons of condensate, equivalent to a reduction of 245 tons of carbon dioxide emissions.
In 2020, an investment of 200000 yuan was made to carry out low nitrogen technology transformation of natural gas boilers, reducing nitrogen oxides from 50mg/m3 to 30mg/m3, and reducing nitrogen oxides by 10kg per year.
In 2018, 1.6 million yuan was invested in the construction of a reclaimed water reuse system to treat and reuse printing and dyeing wastewater, saving 300000 tons of fresh water annually, equivalent to reducing carbon dioxide emissions by 183 tons.
In 2021, State Grid of China will construct photovoltaic power generation on the roof of the plant, with an installed capacity of 3.3MW and an annual power generation of 3.5 million kilowatt hours, equivalent to an annual emission reduction of 2653 tons of carbon dioxide. We plan to build a 10000 square meter photovoltaic power generation shed with an estimated installed capacity of 1.7MW and an annual power generation capacity of approximately 1.8 million kilowatt hours, equivalent to reducing carbon dioxide emissions by 1364 tons.