Blister packaging atan rangkachak, rose gold, champagne leh silver metallized PET sheet te chu chhui chhuak rawh. He B2B guide hian metallic finish, rigid PET versus flexible BOPET, thermoforming limits, coating adhesion, printing, sealing, quality control leh cosmetic, confectionery leh retail tray-a OEM customization te a huam a ni.