• We have improved the product material, from laminated fiber bows to locust wood and high-strength transparent epoxy bows to make it stronger and increase its durability, so that it can withstand greater force to ensure safety .High-strength solid protective glue is added to the bow piece, even if beyond the strength range cause the bow to break, there is no danger of wood chips splashing, and the new bow can hear the sound of protective glue on first use and will disappear quickly