Forestry Tasmania and one of its major customers want the verification process to be sped up to give the industry certainty.

The original deadline for the completion of the verification process was extended from the end of this week until the end of February.

Following a board meeting in Hobart on Wednesday night, timber company Ta Ann Tasmania's managing director, Dato KH Wong, said the board was ``deeply disappointed'' by the delay.

``Tasmania needs to decide whether it wants a timber industry and the employment it creates, and if it does, then quick action is needed to restore the certainty required by international markets,'' Mr Wong said.

Last week, British company International Plywood cancelled its plans to import wood products from Ta Ann Tasmania after environmental groups presented evidence the wood was being sourced from high conservation value forests.

Environment groups have consistently pointed to a clause in the intergovernmental agreement which states 430,000 hectares would be immediately placed in interim reserves and compensation paid out if wood supply contracts could not be met from outside that area.

``Radical environment groups appear to be using the delay in the verification process to harm our markets,'' Mr Wong said.

Forestry Tasmania managing director Bob Gordon said he was concerned about the impact the verification delay and environment group tactics would have on other processors as well as Ta Ann.

``If Tasmania does want a timber industry, one of two things needs to occur _ either the verification process is finalised quickly, or the radical environmental groups stop trashing Tasmania's reputation around the world,'' Mr Gordon said. Environment groups have accused Forestry Tasmania of undermining the intergovernmental agreement by continuing to log in areas meant to be protected.