Sabiedrība ar ierobežotu atbildību "Voltjen" is a Latvian limited liability company registered in 2014. Its primary line of business is construction of utility projects for fluids (NACE 42.21). In 2025 the company reported €323K in revenue and employed approximately 6–10 people, placing it in the micro-enterprise tier. Revenue declined 18% year-over-year, indicating a contracting operation.