Attestation_Letter_-_SUMITOMO_ELECTRIC_SINTERED_COMPONENTS_(T)_CO.,_LTD._-_14K_(UKAS)_(Signed)_.pdf pdf File CERT_-_SUMITOMO_ELECTRIC_SINTERED_-_14K_(UKAS)_EXP._16_DEC_2028.pdf pdf File IATF16949_2016_-NEW_Expire_2027.pdf pdf File ISO_14001_EXP._16_DEC_2025_CERT_-_SUMITOMO_ELECTRIC_SINTERED_-_14K_(UKAS)_.pdf pdf File