Joshin (上新電機) is a leading home improvement company in Japan, specializing in various renovation services that enhance living spaces. With a strong foundation in the electronics retail industry, Joshin offers expert guidance and comprehensive after-sales service to ensure customer satisfaction. The company focuses on transforming areas such as kitchens, bathrooms, and toilets, providing a range of products including built-in cooking heaters, eco-friendly water heating systems, and advanced solar power solutions.

Their services extend to window and door installations, as well as exterior and interior renovations, including eco-window systems and wall painting. Recognized for excellence, Joshin has been rated as the number one choice for home renovations for five consecutive years and has garnered positive customer testimonials emphasizing the knowledgeable staff and smooth project execution. With a commitment to quality and innovation, Joshin continues to support homeowners in creating comfortable, efficient, and stylish living environments.