do not belive in any claim, such as ... (they are "not" true)

• We can supply biodegradable bags with d2w/epi/tdpa, just add additives...

Why: oxo-biodegradable plastic is to give ordinary plastic a pre-determined controlled safe service life, and the authorized factories must be certified and the product is fully tested. It is not just about "add additives", you need to make sure you get what you pay for.  

• We can supply 100% eco-friendly material

Why: why 100% eco-friendly material? If it is corn starch, please consider about foot shortage impact and corn starch biodegradables are sometimes described as made from "non-food" crops, but are in fact usually made from food crops, and drive up the price of human and animal food. In June 2009 Germany's Institute for Energy and Environmental Research concluded that oil-based plastics, especially if recycled, have a better Life-cycle Analysis than compostable plastics.

• We pass ASTM 6400, EN 13432, and BPA

Why: It is sometimes claimed by the lobbyists for the compostable plastics industry (“European Bioplastics” and “Biodegradable Products Institute”) that a plastic product is not “biodegradable” unless it can comply with EN13432 (and similar standards such as ISO 17088, ASTM D6400, ASTM D6868, and Australian 4736-2006).  This is not correct.  These standards are appropriate for compostable plastics but not for products designed to biodegrade if they get into the evironment.  EN13432 itself says that is not appropriate for plastic waste which may end up in the environment through uncontrolled means.

Industrial composting is not the same as biodegradation in the environment, as it is an artificial process operated according to a much shorter timescale than the processes of nature.  The requirement in EN13432 and similar standards for 90% conversion to CO2 gas within 180 days is not useful even for composting, because it contributes to climate change instead of contributing to the fertility of the soil.  “compostable” plastic, 90% of which has been converted to CO2 gas, is therefore virtually useless in compost. Nature's lignocellulosic wastes do not behave in this way.

Compliance with international standards

Oxo-biodegradable plastic products are normally tested according to ASTM D6954-04 “Standard Guide for Exposing and Testing Plastics that Degrade in the Environment by a Combination of Oxidation and Biodegradation.”  There are two types of Standards – Standard Guides and Standard Specifications  ASTM 6954 is an acknowledged and respected Standard Guide for performing laboratory tests on oxo-biodegradable plastic, and the second Tier of ASTM D6954-04 is directed specifically to proving biodegradation.

The tests performed according to ASTM D6954-04 tell industry and consumers what they need to know – namely whether the plastic is (a) degradable (b) biodegradable and (c) non eco-toxic.

It is not necessary to refer to a Standard Specification unless the material is intended for a particular purpose. ASTM D6954-04 provides that if composting is intended, ASTM D6400 should be used.

Conditions in the laboratory are designed to simulate so far as possible conditions in the real world, but have to be accelerated in order that tests may be done in a reasonable time.  Pre-treatment does not invalidate the results as extrapolated to real-world conditions.

ASTM D6954-04 not only provides detailed test methods but it also provides pass/fail criteria.  For example, para. 6.6.1 requires that 60% of the organic carbon must be converted to carbon dioxide during the test.  It is not necessary to continue the laboratory test until
100% has been achieved, because it is possible, by applying the Arrhenius relationship, to predict the time at which complete biodegradation is likely to occur.

Tests on oxo-biodegradable plastic products are usually conducted according to the test methods prescribed by ASTM D6954-04 by independent laboratories.  I have seen many laboratory test reports and am satisfied that oxo-bio products will totally biodegrade.

If the plastic currently polluting much of our land and marine environment had been made of oxo-biodegradable plastic, most of it would by now have completely degraded, and there would be no Great Pacific Garbage Patch.