The Story of Koja EnglishKoja GroupThe Story of Koja Koja Ltd. was established in Tampere. The company began to manufacture products needed in the building trade, such as fittings, ventilation valves and window fasteners. In 1939, Koja's new industrial hall of 1000 m² was ready to move in but the war finished the works. After the war, the production slowly recovered and there was keen demand for the products of metal industry. During the World War II the main part of the production went to the Finnish Army. The reconstruction after the war created keen demand for Koja's products. The first air handling unit models were designed and the manufacturing began, e.g. Air Heater HPV, dust collecting fan RFE. The first air conditioning contracts were closed and the contracting activities led to the creation of a separate department. The little metal workshop had grown to the air conditioning company. Koja grew and developed during the decade. The production premises were twice enlarged.

The production was made more effective and the quality was improved. The air conditioning contracting was developed, the share of the total turnover was even 85%, one of the most significant projects was the indoor ice-skating rink in Tampere. The present production plant in Tampere was built in 1969. The present head office was built in the beginning of the decade and all the activities were moved to Rantaperkiö, Tampere. The share of equipment sales began to grow and the process fans department was founded. Project exports to Soviet Union began. New products were launched, e.g. Air Handling Unit Series Heli and Roof Extractor FEK. Project exports carried out several large air conditioning projects in Soviet Union. The contracting activities was made into a separate company, Koja Ilmastointi Oy (Koja Air-conditioning). The turnover of Koja Group stood at EUR 33.6 million. Kojacool Oy started operations. Koja Ltd. started to produce coil heat-exchangers and a new production plant was built at Jalasjärvi.

Koja Ilmastointi Oy started to do business under the name Koja Engineering Ltd. and extended operations to include all building technology contract work: heating, plumbing, air-conditioning, electricity, telecommunications, automation and cooling. Koja Marine won the first air-conditioning system order for a cruise ship. The production plant at Jalasjärvi was extended twice and the production plant in Tampere was modernized. Koja Marine supplied air-conditioning systems for several cruise ships. Koja Group decided to concentrate on the industrial manufacturing and sold the shares of Koja Engineering Ltd. and Mansen Putki Oy, the building technologies contractor companies. Koja settled its position from the deliver of devices to the bringer of energy and cost-effective solutions. Life Cycle Services diverged on their own sector, the side of marine, buildings and industry. Services' selection has extended crucially. It includes all maintenance operations throughout the whole life cycle of a product.

Family business is celebrating its successful journey as reliable and brave cooperation partner. Koja is starting the biggest investment programme in its history. Koja OOO is established in Russia and Life Cycle Services strengthens its operations by founding a consignment stock in Florida.Trosten has the distinction of being the first Air Handling Unit manufacturer in Dubai to establish one-of-its kind facility.home ac unit won't start The facility is spread over an area of 100,000 sq. ft. located at the Dubai Investments Park, Dubai which is strategically located to cater to the Middle-East and Asian markets. are portable ac units worth itDubai being a major commercial and shipping hub, provides the customer easy access to the facility with the shortest lead times.home ac unit has ice

Advanced manufacturing tools with in-house facilities for sheet metal fabrication & CFC free PUF injection Italian technology adds strength and flexibility to design and manufacture products suiting regional conditions and requirements. Comprehensive product selection software has been built aiding manufacturing by generating complete bill of materials, fabrication drawings along with detailed technical data sheets and price information. ISO 9001: 2008 certified manufacturing facility ensures consistency in providing quality products adhering to the delivery schedules. We also recognize our responsibility towards the environment which has been successfully implemented in strict adherence to ISO 14001:2004 which fulfills our social obligation towards the environment and a greener community. A team of highly skilled engineers, technicians and operators form the back bone of the facility. Implementation of OHSAS 18001:2007 for Occupational Health & Safety Management System has ensured to maintain a safe and comfortable working environment.

Annual training programs are conducted to enhance and empower the employees with the latest advancements in manufacturing processes and new technologies, enabling them to stay up to date with latest developments. A dedicated team of Quality Assurance expertise ensures quality is maintained at each phase of the manufacturing process, with the help of a detailed stage wise quality assurance inspection plan guarantees to deliver quality product. Engineering wing of Trosten specializes in product customization to suit specific applications and site constraints.  If the need arises, units are also dispatched in complete knocked down condition and assembled at site by factory technicians and further, certified by our QC engineer. Assistance to commissioning is offered upon request by the customer. Trosten is fully geared to meet any urgent delivery schedules or deliveries in accordance with site project program, whereby, avoiding necessary storage space / damage at site.  Being a regional manufacturing facility, relieves the customer from maintaining stock of spares, as Trosten has a comprehensive inventory policy, which ensures minimum downtime.