Dec 11, 2009. /Lesprom Network/. Walki Group announced price increases on all of its Technical Products grades as a consequence of the rise of raw material and energy costs. Simultaneously, customers' payment terms will be harmonized to reflect standards set for each specific geographical market. These changes will affect the products in the company's Flexible Packaging, Heavy Duty, Insulation & Construction and Technical Papers businesses, the company said in a press release received by Lesprom Network. The price increase and the payment term harmonization will be effective as of February 1, 2010. The level of increase will depend on the markets, the constituents of the products, and the structure of the agreements in place. The increase range will vary up to 10%.