TECHNOLOGY FOCUS - METALLURGY - Preferred Component: Each electrode terminal and cover body consists of a metal of aluminum (Al), Al alloy, copper (Cu), or Cu alloy.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Material: The triazine dithiol compound is a compound of formula (I).R=-OR1, -OOR1, -SmR1, -NR1(R2);R1, R2=H, 1-20C alkyl, alkenyl, Ph, phenyl alkyl, or cycloalkyl;M=1-8;andM1, M2=H, Na, Li or K, Ca, Ba, aliphatic primary amines, aliphatic secondary amines, aliphatic tertiary amines, or quaternary amine salt.    TECHNOLOGY FOCUS - POLYMERS - Preferred Material: The elastomer resin is maleic acid anhydride modification ethylene copolymer, which is maleic acid anhydridealkyl acrylate ethylene trinary copolymer. Preferred Component: The maleic acid anhydride-alkyl acrylate ethylene trinary copolymer is contained at 1-30 wt.% when the weight of the polyphenylenesulfide composition is 100 wt.%. EXAMPLE - A surface corrosion is removed about cover body, positive-electrode terminal (3), and negative-electrode terminal (4) by polishing with abrasive, cleaned with ethanol. Electrochemical process liquid was dissolved, adjusted with 5 mmol of triazine thiol derivatives, and put into organic plating bath to which the potentiostat, and the saturated calomel electrode (reference electrode) were connected. Upper cover was made counter electrode and an anode for the cathode with the working electrode, and the electrochemical processing during 10 minutes was carried out in 30degreesC with the current density of 0.05 mA/cm2. Finish of an electrochemical processing, was washed with water and ethanol, dried and organic thin film was covered with positive-electrode terminal. Negative-electrode terminal was carrying out the same electrochemical processing. After producing a film, cover body, positive-electrode terminal, and negative-electrode terminal were positioned in 120degreesC metal mold. Polyphenylene-sulfide composition made into the molten state was filled with 300degreesC in a metal mold, solidified by cooling at loaded pressure of 50 Mpa. The sealing board for lithium-cell containers with which the film of the surface of the cover body and electrode terminals and the insulation sealing member (5) chemically bonded together were formed.