The environmental engineering company, Tinci Holdings, has seen its revenues fall by 40 per cent for the six months prior to June 30th 2011.

It is focusing on the development of flue accessories, particularly Flue Gas Desulpherisation joint ventures in niche markets, and is acquiring a 22.5 per cent shareholding in chemical specialist JiangSu AnDi Chemical Co, reports Stock Market Wire.

David Steeds, chairman of Tinci Holdings, said: "The first six months of 2011 were yet again challenging for Tinci's core FGD business. However, the management team has worked hard to cut costs on reduced sales."

Mr Steeds continued by saying that the firm's management is exploring a number of possible joint ventures with established customers and partners.

It comes after the US National Fire Protection Association issued new guidance for cleaning flue accessories.

This standard forbids the use of flammable gas as a cleaning agent for the interior of pipes.