We serve our customers wIth all the necessary compliances that are needed in EU  Standards. How we serve: TSE (TURKISH STANDARDS INSTITUTE) Sigma is awarded with the  `TSE` Certificate  for all the equipment and Services. AFTER SALES SERVICE COMPETENCE  CERTIFICATE Sigma is awarded with the  above certificate  given by  Ministry of  Industry and Trade  for Protection of consumer rights and preservation of competence sought by the law number 4077 GUARANTEE CERTIFICATE By the law  number 4077 , Sigma Guarantees the Service  and Maintenance for two years for all the equipment  sold, which are  approved by the  directorate of consumer right and preservation of competence. We give at site  service guarantee for the equipment we sell in Turkey as a whole. We give service guarantee for complete Turkey  either  directly by our central service center  or through our authorized services throughout Turkey. We stock and supply  locally  manufactured or original  spare parts  at all ranges of prices. All the spares are under  our standard terms of guarantee. ISO 9001 The Quality Management System in Sigma is ISO 9001 : 2000 certified SERVICE STAFF We are  well aware the importance and the necessity of training , research  and development for the services  we supply. We employ a young, dynamic and well trained staff of engineers and technicians with  analytic approaches to problems. Service  supplied are defined as the services  at breakdown and contractural  services.