Adopting 'green' alternatives
There are, however, concerns over the ecological impact of engineered wood. MDF, HDF, particleboard and hardwood plywood are produced using adhesives with urea-formaldehyde resins. The first two, in particular, give off the highest levels of formaldehyde. Although varieties with lower emission rates are now available, companies are exploring environment-friendly options such as bamboo. Furniture suppliers are also combining soft- and hardwood with certain species of timber, which mature within two or three years, similar to bamboo. In Anji, 50 percent of the aggregate turnout of bamboo-based products consists of flooring. The latter includes models made wholly of bamboo and composites of the grass and other wood types. Anji is a county in Huzhou, Zhejiang province, known for its 60,000 hectares of bamboo groves. Countrywide, the bamboo industry yielded nearly $13.8 billion worth of products in 2010, according to the State Forestry Administration. This strengthens China's position as the world's largest hub for bamboo processing and exporting. To sustain environment-protection measures, China is developing cultivated forests, said Zhang Bing Yuan, general secretary and professor of Jiangsu Province Furniture Trade Association and Nanjing Forestry University. This strategy has helped reduce damage of natural woodlands. Recycled wood is another "green" option in making building materials, including flooring and skirting. There are currently about 100 manufacturers in China adopting this option for their art parquet floors, with N.S.F. Flooring Co. Ltd said to be the first in the country to do so. N.S.F. employs wood from old houses and planks, and log cutoffs. General manager Wu Wen Kei said the materials are $62 to $125 per ton or about $6 for every square meter, less than one-tenth the cost of virgin wood, which is $770 to $1,500 per ton. Recycled wood has a low moisture content and requires minimal drying, consequently reducing production costs. The company cuts the material into smaller pieces to form art parquet or mosaic floors. Finished models start at $31 per square meter and reach $750. The most expensive designs exceed $900. For small furniture pieces, Joint Creative takes the green trend further by replacing wood with materials that are more biodegradable, including paper. The designs are popular in France. AWP International Wood Products uses thermally modified wood from Austria to replace expensive tropical timber. Also referred to as thermowood, the input is heat-treated to boost stability and resistance to decay without the use of chemicals. It costs about 20 percent less than solid timber.
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