Here are energy‑efficient / sustainability‑focused plastic-packaging manufacturers and suppliers with operations in Asia, with short notes to help you pick who to contact. I’ve prioritized firms that publish concrete energy / decarbonization or renewable‑energy actions for their Asian sites.

Top options (with supporting sources)

• Amcor — global packaging company with major Asia‑Pacific manufacturing (recent investment in an advanced, energy‑efficient coating facility in Selangor, Malaysia; public decarbonization roadmap and recycle‑ready flexible solutions). Good for flexible and healthcare packaging and mono‑material/recycle‑ready solutions. (Amcor.com)

• UFlex (India) — large flexible‑packaging manufacturer that has been shifting plants to renewable power (PPA for its Dharwad plant), developing high‑PCR films and in‑house recycling technologies to reduce energy/carbon per ton. Good for scalable flexible films, rPET and multi‑layer recycling. (sustainabilitymea.com)

• Huhtamaki (Asia operations) — global foodservice and flexible packaging group with an Asia footprint; running efficiency programs and footprint optimization in Asia to reduce input/energy use and roll out sustainable solutions. Good for fiber and flexible/foodservice packaging. (huhtamaki.com)

• Rengo (Japan) — major Japanese packaging company (corrugated, flexible and paper‑based) actively pursuing digitalization and manufacturing efficiency programs across its group (useful if you want lower‑energy alternatives to plastics or hybrid solutions). (Rengo.co.jp)

Other notable manufacturers / suppliers in Asia (good to evaluate based on product fit)

• Toyo Seikan (Japan) — large rigid‑container and packaging maker expanding sustainability initiatives (rigid plastic and multi‑material solutions).
• Sealed Air — global packaging company with multiple Asia facilities; offers lightweight/optimized protective packaging and recycle‑ready flexible options.
• SK geo centric / SK Group partners — major Asian resin / advanced‑recycled‑material suppliers partnering with packagers (useful if you’re sourcing lower‑carbon resin or BOPE/BOPP/PE alternatives). (industrialmeeting.club)
• Evergreen / local Chinese flexible packaging producers — many Chinese converters now promote BOPE, mono‑PE pouches and renewable‑power usage; evaluate individual suppliers by factory energy mix and recyclable/mono‑material product lines.
• Local regional specialists (Malaysia, Vietnam, Thailand, South Korea) — several mid‑tier converters offer energy‑efficient extrusion and lower‑gauge structures; these are useful when you need short lead times or country‑specific sourcing.

How to evaluate and pick

• Ask for site energy metrics: energy use per tonne of product (kWh/t) and % electricity from renewables (or PPA agreements).
• Request product lifecycle or carbon‑intensity data (EPD or cradle‑to‑gate LCA) for candidate films/containers.
• Prioritize mono‑material, recyclable structures (mono‑PE, BOPE/BOPP) or verified PCR content if recyclability matters.
• Check certifications / targets: ISO 50001 (energy management), public net‑zero or decarbonization roadmaps, and recent press about renewable PPAs or energy‑saving equipment (e.g., air‑knife coating, LED curing, newer extrusion lines).

If you want, I can:

• Shortlist 5–8 manufacturers matched to your product type (flexible pouch, rigid container, medical/sterile, or barrier coffee/food packaging) and target country in Asia (e.g., Malaysia, India, China, Vietnam, Japan, S. Korea), with direct contact pages and recent sustainability claims.
• Or build an RFP checklist (energy & sustainability questions + sample KPI template) you can send to suppliers.

Which would you prefer?