... share 60% domestic market! As the best manufacturer of Lunch Box Machine, Tongjia has exported to over 8 different countries, share ... 60% domestic market!plastic machine PS Lunch Box Machine is widely used to produce foam sheet for packing ... a kind of new-type packing material2) Shock-proofing, sound insulation, heat preservation, damp-proof, safety,sanitation, good plasticity3) Widely ...