search ... HOME BUSINESS OFFER CAREER CONTACT LABOR GROUP Company Publications 24/7 service in the field of Mining Shaft Lifts. Basic issues of designing and constructing photovoltaic installations How to correctly design and implement a photovoltaic installation? We invite you to read our guide , in which we discussed the basic issues in the field of design and construction of photovoltaic installations. If you do not have Acrobat Reader needed to open PDF files, you can download it by clicking the link below business About company Quality policy Structure Partners Authorizations and certificates News Reference Publications offer Explosion-proof construction devices Mining shaft hoists HV, MV and LV electrical devices, networks and protections Repair of components of electrical devices Electric traction devices in underground mining plants Laboratory of measuring instruments Laboratory of electro-energetic security Design office Photovoltaic installations COAL SALE contact The company OPA-LABOR Sp. z o . o . ul. Wyzwolenia 22 41-103 Siemianowice Śl. tel. 0048 32 228 16 09 fax 0048 32 220 11 31 e-mail: opa@opalabor.pl District Court Katowice - East in Katowice, VIII Commercial Department KRS 0000011087 NIP 643-16-17-240 REGON 276942863 Share capital 600,000 PLN © Labor Group | Design and execution Grupa Soodo 2008