turning now to the drawings , in fig1 through fig5 there is shown an electrolytic capacitor ( or &# 34 ; capacitor &# 34 ;) 11 having an anode lead terminal 12 and a cathode lead terminal 13 , both of which look like a bull horn , respectively . the electrolytic capacitor 11 is held in an electrolytic capacitor container tray ( or &# 34 ; container tray &# 34 ;) 14 . the electrolytic capacitor container tray 14 is constructed in a rectangular shape out of low cost polystyrene . the container tray 14 has a plurality of container hollows 15 for placing the electrolytic capacitor 11 in each respective container hollow 15 . the container tray 14 is preferably formed by monolithically molding . in addition , a terminal protection section 16 is formed by extrusion at the time of the foregoing monolithic molding of the container tray 14 in the bottom of each respective container hollow 15 for holding the anode lead terminal 12 and the cathode lead terminal 13 of the electrolytic capacitor 11 . as shown in fig2 and fig3 each container hollow 15 is formed almost in a cylindrical shape and each terminal protection section 16 is formed in a cylindrical shape with two terminal rotation preventive sections 16a and 16b extruding to both sides wherein the anode lead terminal 12 and the cathode lead terminal 13 of the electrolytic capacitor 11 are settled respectively and fixed in position . a plurality of shock absorbing hollows 17 is formed along the edges of the electrolytic capacitor container tray 14 by monolithic molding for the purpose of increasing the overall strength of the electrolytic capacitor container tray 14 . also , there are shock absorbing hollows 17 along the periphery of the foregoing electrolytic capacitor container tray 14 , made by monolithic molding . these shock absorbing hollows 17 serve to intensify the overall strength of the electrolytic capacitor container tray 14 and to prevent damage from infliction of shock to the electrolytic capacitors 11 due to excellent shock absorbing characteristics even when the package of the electrolytic capacitors 11 is accidentally dropped . furthermore , a plurality of the foregoing container hollows 15 are separated from one another by partitioning walls 18 and the surface 25 of each respective partitioning wall 18 is provided with a semicircular arc shaped concavity 19 , resulting in an increase of the overall strength of the electrolytic capacitor container tray 14 . the improved shock absorbing characteristics of the electrolytic capacitor container tray 14 thus realized make it possible to prevent damage from infliction of shock to the electrolytic capacitors 11 even when the package of the electrolytic capacitors 11 is accidentally dropped . as shown in fig4 and fig5 each of the upper edges of partitioning walls 18 existent between container hollows 15 has a semicircular concavity 19 for the purpose of increasing overall strength of the electrolytic capacitor container tray 14 . in addition , as illustrated in fig2 and fig4 each respective surface 25 of six wall sections 18 situated on the inside of the container hollows 15 is concaved in a circular arc form with its degree of concavity decreasing towards the bottom of the container hollow , resulting in more increased strength of the container tray 14 . furthermore , the number of the wall sections 18 cannot necessarily be limited to six , and its surface need not necessarily be concave in a circular arc form . the spacing between electrolytic capacitors 11 held in each of a plurality of the container hollows 15 is fixed to a distance large enough for an automatic mounting machine of chucking type to pick the electrolytic capacitors 11 . besides , the depth of each of the plurality of the foregoing container hollows 15 is fixed to a suitable certain length so that the end of the electrolytic capacitors 11 opposite to the one with the anode lead terminal 12 and the cathode lead terminal 13 sticks out above the container hollows 15 for enabling the automatic mounting machine of chucking type to chuck the projected portion of the electrolytic capacitors 11 when the electrolytic capacitors 11 are being held in the container hollows 15 . turning now to fig6 a packing method of electrolytic capacitors using the above container tray 14 is described . first , each of a plurality of electrolytic capacitors 11 is placed in each respective container hollow 15 of an electrolytic capacitor container tray 14 . at this time , the polarity directions of anode lead terminal 12 and cathode lead terminal 13 are aligned for all of the electrolytic capacitors 11 by , for example , placing the electrolytic capacitors 11 in the container hollows 15 with the anode lead terminals 12 and the cathode lead terminals 13 situated at the left side and at the right side of each container hollow 15 , respectively . then , the electrolytic capacitor container tray 14 packed with capacitors 11 is placed in a receptacle , such as cardboard box 20 , a protector material 21 is put over the capacitor container tray 14 , a cover , such as cover lid 22 , is placed on top of the protector material 21 with its flaps 22a bent onto the external sides of the cardboard box 20 , and then all of these are bound together by bands 23 to complete the packing of the electrolytic capacitors 11 . when the electrolytic capacitors 11 packed in this way are mounted automatically on a printed wiring board by use of an automatic mounting machine , the electrolytic capacitor container tray 14 carrying the electrolytic capacitors 11 is taken out by unpacking the foregoing package . then , as shown in fig7 electrolytic capacitor container tray 14 is removed to a container box 24 made by molding a low foamed styrol which has greater mechanical strength . the electrolytic capacitors 11 held under this condition are picked by chucking by an automatic mounting machine of chucking type for mounting on a printed wiring board . at this time , the polarity directions of the anode lead terminal 12 and the cathode lead terminal 13 for all the electrolytic capacitors 11 are aligned . besides , rotational movements of the anode lead terminal 12 and the cathode lead terminal 13 are restricted by terminal protecting sections 16 with a resultant prevention of rotational movements of the electrolytic capacitors 11 after the electrolytic capacitors 11 have been placed and held in the electrolytic capacitor container tray 14 . therefore , the polarity directions of electrolytic capacitors are maintained in one direction and automatic mounting of a plurality of electrolytic capacitors 11 held in an electrolytic capacitor container tray 14 on a printed wiring board by an automatic mounting machine can be performed smoothly . variations on the above described embodiments are possible . for example , fig8 shows another electrolytic capacitor packing method . according to this packing method , electrolytic capacitors 11 are first placed in container hollows 15 of an electrolytic capacitor container tray 14 with each respective anode lead terminal 12 and cathode lead terminal 13 of the electrolytic capacitors settled in terminal protecting sections 16 . then , the whole electrolytic capacitor container tray 14 is placed on a cardboard cover lid 22 which is sitting on the floor with its flaps 22a bent upward and a cardboard box 20 is placed over the electrolytic capacitor container tray 14 with its opening faced downward . after this step , the whole package is turned over so that the cardboard lid 22 is situated upside down in fig9 and then bound by bands 23 to complete an electrolytic capacitor packing . when a comparison is made between the packing method as illustrated in fig8 and fig9 and the one as illustrated in fig6 the materials used for packing are the same . however , the electrolytic capacitor container tray 14 is situated under the electrolytic capacitors 11 with the packing method of fig6 but the electrolytic capacitor container tray 14 is situated above the electrolytic capacitors 11 with the packing method of fig8 and fig9 wherein the weight of the electrolytic capacitors 11 is not applied directly to the electrolytic capacitor container tray 14 . consequently , even when a mechanical shock or impact is applied to the electrolytic capacitor package from outside during its transportation , the electrolytic capacitor container tray 14 rarely undergoes breakage or deterioration . this feature leads to the possibility of repeated use of the electrolytic capacitor container tray 14 made of resin or paper . in the foregoing example of one embodiment of a packing method , the whole package was bound by bands 23 at the last step . instead of this , after the cardboard box 20 is placed over the electrolytic capacitor container tray with its opening faced downward and the whole package is bound by bands 23 , the whole banded package can be turned upside down at the final step . in another foregoing embodiment of this invention , an automatic mounting machine of chucking type is used in mounting electrolytic capacitors 11 automatically on a printed wiring board by chucking the capacitors . in yet a further variation , it is also possible to use an automatic mounting machine of suction pad type for mounting electrolytic capacitors 11 automatically . in this case , the depth of a plurality of the foregoing container hollows 15 can be made as deep as the total length of the electrolytic capacitor 11 . in another foregoing embodiment of this invention , an electrolytic capacitor container tray 14 is made by forming a rectangular container tray with shock absorbing hollows 17 provided along its shorter sides from less costly polystyrene resin . in another variation , paper can be equally well used as the raw material and a square configuration for the tray can be employed . in this case , the shock absorbing hollows 17 might be provided along the periphery of a square shaped tray . since the strength of polystyrene resin as used in forming the electrolytic capacitor container tray 14 is not strong enough for holding the electrolytic capacitors 11 to be picked up by an automatic mounting machine for mounting the capacitors on a printed wiring board automatically , the whole electrolytic capacitor container tray 14 was removed to and placed in a container box 24 made from stronger low foam styrol in the foregoing example of the embodiments of this invention . in yet another variation , if the electrolytic capacitor container tray 14 is made from stronger low foam styrol , the container tray does not have to be removed to a separate container box 24 as was in the foregoing example and the electrolytic capacitor container tray itself can be used as the tray for automatic mounting without any problems . in the above examples , the electrolytic capacitors 11 have the anode lead terminal 12 and the cathode lead terminal 13 , both showing a bull horn configuration respectively . in another variation , the shapes of the anode lead terminal 12 and the cathode lead terminal 13 are not limited to the bull horn configuration . this invention is equally applicable to electrolytic capacitors having an anode lead terminal and a cathode lead terminal of different shapes such as a straight lead terminal , for example , and the like . although packing methods for electrolytic capacitors having anode lead terminals 12 and cathode lead terminals 13 and packing materials thereof have been dealt with in the foregoing examples , the application of the packing methods and the packing materials thereof is not limited to electrolytic capacitors . it is obviously more convenient for automatic mounting of any leaded capacitors on a printed wiring board to have the capacitors placed in a container orderly and neatly with the terminal positions aligned beforehand . of course , it should be understood that a wide range of changes and modifications can be made to the preferred embodiment described above . it is therefore intended that the foregoing detailed description be understood that it is the following claims , including all equivalents , which are intended to define the scope of this invention .