ZH
EN
JP
ES
RU
DE??????? ??
?? 6??? ??????? ??? ??? ??? ??.
?? ???? ??????? ??? ??? ??? ??? ????: ???, ????.
International Organization for Standardization (ISO), ??????? ??
SCC, ??????? ??
British Standards Institution (BSI), ??????? ??
- 22/30446075 DC BS ISO 22171 ?? ?? ??? ??? ?? ??(CEC) ? ? ??? ????? ??? ???? pH 7?? ??? ?? ??? ??? ??