This research employs a quantitative research methods to analyze the important role of Public relations (PR) in building brand equity and the existence of Wuling Air EV electric car products in Indonesia. In an era that increasingly emphasizes environmental issues, the automotive industry is turning to environmentally friendly vehicles such as electric cars. Wuling, as a newcomer in this market, faces challenges in building consumer trust and competing with established brands. Through effective PR strategies, such as media relations, digital campaigns, and active participation in social media, Wuling strives to increase brand awareness, positive image, and customer loyalty. With a focus on educating consumers about the benefits of electric vehicles, Wuling Air EV is expected to maintain and strengthen its position in the competitive automotive market.

The location of the road studied is the northern ring road which is still in the form of a compacted pavement layer. With this road, it can reduce traffic jams in the city and divert heavy vehicles. Field density analysis was carried out on the North Ring Road in Lamongan district using the Sand Cone method to obtain soil water content values ??on the road. The work procedure carried out is determining the weight of the sand, the weight of the soil, the grade water, dry soil density, and field density. The testing point was carried out at 152 different points for every 25 meters, namely from STA 0+000 to STA 3+800. The results showed that the average soil water content was 19.0%, and the soil density was 96.98%. According to the requirements of SNI 03-2008-1992, the recommended soil density value is 95%. From the results of the tests that have been carried out it can be concluded that the density The soil in the field meets the specified soil density requirements because the average density in the field on road pavement is 96.98%.

Industry has an important role in the economic growth of a region. The city of Yogyakarta is an example that shows the diversity of industry, especially on a small scale or home-based, such as PT. TS Putra 2 which focuses on aluminum casting. The aim of this research is to find out the right marketing strategy for PT. TS Putra 2. This research method is qualitative and quantitative based on location observations and interviews with company owners. Analysis uses the SWOT method and IFAS-EFAS method. The results of this research are the potential and opportunities to expand marketing reach and increase industrial profitability, which can be done through marketing innovation, direct sales, and utilization of marketing time. The conclusion of this research is that a marketing team is also needed to come up with marketing innovations for TS Putra 2 Cast Aluminum products.

One of the automatic sink products was made by Yogyakarta Technology University students. It is felt that this automatic sink product needs to be tested for its usability or ease of use. The USE questionnaire was used to carry out this test, and five test parameters were used. specifically, learning ability, efficiency, memory, error avoidance, and satisfaction. Based on its use, the purpose of this paper is to find out the user's opinion about the automatic sink product. The distribution of the USE questionnaire consisting of ten questions and five rating points on a Likert Scale was used to conduct this kind of quantitative descriptive research on consumers of automatic sink products. This study obtained usability measurement results for automatic sink products with a value of 84.67% on learnability, 96.22% on efficiency, 82.44% on memoriability, 88% on errors and 76.88% on satisfaction.