Because chinaware and glass are delicate substances and will break if it falls. the straw covers the substance and absorbs shocks and any sudden force will not cause the breakage of the glass or chinaware
The glass or chinaware articles arepacked with straw because they are delicate substances and can break or crack if it falls. The straw can be compressed easily and can absorbs shocks or jerks; therefore any sudden force will not cause the breakage of the glass or chinaware.