Manufactured with the packing material whose durability was more reinforced than an existing gun valve and adopted the three stage structure that makes easier to assemble and disassemble.

• 制造真空管因为包封物质以优良其耐久性与现有的注射枪的真空管比较更加增强,并且采用三级结构是的更容易被组装和拆卸。