Symphony Environmental Technologies (AIM:SYM), the AIM-listed specialist in additive technologies for plastic and rubber, said Mexico's Centro de Investigación en Química Aplicada (CIQA) has confirmed that a finished high-density polyethylene product containing its d2w technology meets Mexican Standard NMX-E-288-NYCE-2022.
CIQA testing found the product achieved 89.5% biodegradation within 180 days, well above the standard's 60% threshold, and the company believes it is the first independent verification by a Mexican public institution that an oxo-biodegradable product meets the standard on high-density polyethylene, a polymer known to resist biodegradation.
The finding follows a separate study at Intertek India's accredited laboratory, which recorded 98.7% mineralisation of d2w plastic in soil after 600 days with no resulting microplastics or ecotoxicity, part of eight tests Intertek has run since 2025.
CIQA's programme also tracked molecular weight falling from roughly 89,670 Daltons to 2,941 Daltons during simulated weathering, and found no adverse effects on seed germination, plant growth or biomass in tomato plant trials.
Symphony said the report strengthens its commercial position across Mexico, one of Latin America's largest economies, giving it independently generated evidence to present to regulators, manufacturers and retailers.
"This confirmation of compliance demonstrates that d2w can provide an effective safeguard when plastic escapes collection and enters the open environment, without requiring major changes to manufacturing processes, supply chains or recycling systems," said Michael Laurier, chief executive of Symphony Environmental.
News Intelligence what this means for the company
Mexico's CIQA research centre independently confirmed Symphony's d2w technology achieves 89.5% biodegradation in 180 days on high-density polyethylene, exceeding the national standard's 60% threshold—the first such verification by a Mexican public institution on this polymer. This follows Intertek India's soil study reporting 98.7% mineralisation with no microplastics, and gives Symphony independently generated evidence to present to Mexican regulators, manufacturers and retailers as it targets one of Latin America's largest economies.
The CIQA confirmation addresses a material technical barrier—proving d2w works on high-density polyethylene, a polymer resistant to biodegradation—and provides regulatory-grade evidence for market entry in Mexico. Combined with H1 2026 revenue growth of 23% to £3.61m and return to profitability, this validates Symphony's commercial model in a major Latin American market, though execution risk remains on converting regulatory approvals into volume orders.
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