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Beli kraft murah online, sampai bau pelik — customer complaint makanan rasa 'chemical'. Risiko sebenar: packaging bukan food-grade, migration ke makanan. 
punya checklist 5 soalan wajib tanya supplier sebelum commit bulk order.
5 Soalan Wajib (+ Red Flag Kalau Supplier Tak Boleh Jawab)
1. Ada food-grade cert atau test report tak? Genuine food-grade kraft ada lab report (migration test, heavy metal scan). Supplier patut boleh email PDF dalam 24 jam. Red flag: "Trust us lah" tanpa dokumentasi.
2. PE liner tu rated untuk hot food ke cold sahaja? PE coating ada temperature limit — low-grade melt 60–70°C, premium tahan 90°C+. Kalau hot coffee / nasi panas, kena tanya max heat tolerance. Red flag: supplier tak tahu beza PE density (LDPE vs HDPE).
3. Paper base daripada virgin pulp atau recycled? Recycled kraft (especially tanpa proper treatment) boleh ada contaminant residue. Virgin pulp = cleaner baseline. Minta supplier clarify pulp source. Red flag: "mixed source" tanpa detail.
4. Factory ada ISO / GMP / HACCP tak? Food-contact packaging sepatutnya dari facility dengan food-safety management system. ISO 9001 (quality), GMP (hygiene), HACCP (hazard control) = triple assurance. Red flag: factory tak certified langsung.
5. Boleh bagi sample untuk test dengan menu kami? Legit supplier hantar free sample before bulk. Test sendiri: letak nasi panas 30 minit, check ada seepage / smell transfer tak. Red flag: supplier push "just order, confirm ok" tanpa sample phase.
Spec sheet bukan extra paperwork — itu proof packaging selamat untuk makanan. Kalau supplier dodge soalan, cari lain.
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