Corn starch (foreign name: PLA) is a new biodegradable material, it has good biodegradability, but so far, if you do not add any chemical petroleum-based components, corn starch tableware strength and stability is still very poor, corn starch tableware on the market are basically added to the PP (plasticizers) and other products to increase its strength and stability. Stability, but even so there are still a lot of problems, such as you see a little more expensive cornstarch tableware will be labeled fragile, the temperature can not be higher than 80 degrees and other signs. If the cheaper corn starch tableware do not buy, just under the guise of environmentally friendly tableware, selling things added a bunch of messy glue.
Rice hulls, also 100% biodegradable, but it is made of the main elements of silicon and calcium, so the rice hull tableware is much stronger than corn tableware, but still not as strong as plastic, more than ceramic resistant to fall, the use of instructions to withstand the temperature of -30 to 120 degrees, the material is: rice husk fiber, lignin, starch. These three are all classified as plant fibers from the classification. As for whether to add glue, see whether their products through some international certification, such as SGS, TUV and other leading global third-party certification organizations, because it is still relatively easy to detect the presence of petroleum-based ingredients.
The most important thing to buy a product is to screen it, for example, to buy Apple is generally still the official website or flagship store is more reliable, and other products are also the same.