shown in fig7 and 8 the supporting apparatus 300 includes a first supporting member 310 a second supporting member 320 and at least two buffering device 330 the first supporting member 310 includes a pair of first supporting board 311 and the second supporting member includes at least a pair of second supporting boards 321 the first and second supporting members 310 and 320 have the same configuration of the first and second supporting members 110 and 120 of the first embodiment as a result no detailed description is given the buffering device 330 is arranged between the first and second supporting surfaces the buffering device 330 provides an attenuating effect to the cartridge 500 loaded onto the second supporting surface fig9 is an enlarged view of an encircled portion iii of the supporting apparatus shown in fig7 as shown in fig9 the buffering device 330 in this embodiment includes a cylinder 331 and a connecting board 332 the cylinder 331 includes a body 3311 a piston 3312 and a piston rod 3313 the body 3311 is securely attached to the first supporting member 310 the piston 3312 is moveably disposed within the body 3311 a first end or the piston rod 3313 is attached to the piston 3312 and the other end or second end extends out of the body 3311 and eventually terminated to the second supporting member 320 substantially the connecting board 332 is used to interconnect the second ends of those two piston rods 3313 such that both ends of the piston rods 3313 can move up and down synchronically or simultaneously the second supporting member 320 is.