Mitsui Matsushima. 

Mitsui Matsushima Holdings Co., Ltd., founded in 1913 and headquartered in Fukuoka, Japan, is a diverse corporation engaged in numerous industries. Its primary business involves the worldwide production and distribution of coal products, serving crucial sectors like steel manufacturing, power generation, and general industrial needs. The company also invests in renewable energy, generating and selling solar power to utilities. In the realm of industrial technology, Mitsui Matsushima provides expertise in coal mine development, operation, and preparation. It manufactures specialized components such as mask blanks for photomask producers and equipment for crystal device fabrication. The company's consumer-facing operations include producing straw products for dairy and beverage companies, alongside various paper and PET beverage cups and food packaging. Its apparel division creates and sells custom-made suits, men's and women's clothing, and dress shirts. Further diversifying its services, Mitsui Matsushima manages comprehensive elderly care, offering nursing, in-home, and outpatient services, as well as overseeing elderly housing. They provide logistics solutions for coal storage and transportation, conduct coal sample testing, and inspect conveyors for ash and gypsum. Environmental services include the deployment and recovery of marine oil fences. Locally, the company operates an LPG filling station and a convenience store in Saikai city. It also engages in financial services, providing investment and lending to coal mines, and manages port and harbor activities. Additionally, Mitsui Matsushima offers specialized training programs in mining, encompassing instruction, ventilation analysis, safety, security, and rescue operations. The company adopted its current name, Mitsui Matsushima Holdings Co., Ltd., in 2018, having previously been known as Mitsui Matsushima Co., Ltd.