Price sensitive laminated wooden bowls boards are typically bowls made from Bamboo may not be not food safe. Please see the producer recommendations for food storage and washing. Check with your retailer to insure you purchase complies with Food Service and Table Top standards. If you're using decorated wooden bowls, laminated wood or pressed wood for anything other than wall decorations you are at risk.
California recently passed a standard for formaldehyde content in laminated wooden ware ("Standard93120-9320.12 Title 7")
Typically bamboo is harvested in a four inch Diameter after 4 years of growth. This phenomenal growth is a renewable resource but not large enough to be useful for wooden Salad bowls or larger cutting board or in some cases wooden utensils.
Several methods of production are used to create machine made wood. Bamboo is segmented or laminated together and then glued.
Wood Pulp, Saw dust or Bamboo fibers are most often crushed then pressed together using extreme pressure with Glue, Fillers, Dyes and Stain and reconstituted as a wooden slab or finished product.
Often originally labeled not food safe many of these bowls have flown under the radar of health agencies. The recent change is due to the recognition of the leaching effect of storing fruit nuts, vegetables in these bowls. Washing scraping most household activities associated with cleaning release harmful fibers of cancer causing material into the air.