????? ??? 4 ????? ?????? ????? SEO ????? ??

????? ???????? ??????? ?? ???? Shijiazhuang Deye Piping Idndustrys Co.,Ltd. ?? ???????? ????? ?????? ???? 4 ????. ?? ????? ???????? ???? 4 ???? ????? ?????? ???? ?????? ??????? ?????? ???? ?????? ?????? ?????? ???????? ???????? ????????. ???? ??? ???? ?? ????? ????? ?? ????? ?? ????? ??? ???????? ???? 4 ???? ????? ?? ?????? ?????? ???? ??????? ?? ??????? ?? ?????? ??????? ??? ?? ????? ???????? ???? 4 ???? ????? ???? ????? ?? ???? ????? ?????? ????? ?????? ?????? ??????? ????? ????? ??????? ??????? ??? ????? ??????. ?? ??????? ??? ??? ??????? ????????? Shijiazhuang Deye Piping Idndustrys Co.,Ltd. ??? ??????? ?????? ???? ?????? ?????? ?????? ?? ??? ???????? ???? ???????? ???? 4 ???? ????? ?????? ??????????? ????? ??????????? ?????? ???????. ???? ??? ?? ???? ????? ?? ????? ??????? ?? ???? ?? ????????? ????????? ??? ???????? ???? 4 ???? ????? ????? ??????? ???????. ?? ?? ???? Shijiazhuang Deye Piping Idndustrys Co.,Ltd. ????? ???????? ???????? ?????? ??

?????? ??? ???

???? ??????? PV-0600-2F

???? ????

???? ???? ?? ???? ????? ????? 2500LBS ???????? ????? ??????? ?????? (BV-02500-2F)

??? ??????? ??????? ????? ???? ??????

?????? ??????? ??????

???? ???? ?? ??????? ??????? BRZ-BV-3-4-W

?????? ??????? GGG40/GGG50 DN700 150LBS DI LUG (BFV-1004)

???? ????? ?????? EPDM

???????? ?????? ?????

???? ??? GGG50 CV-W-16

DI GGG40 ????? ???? ?????? ???????

???? ???? CI ????? ????? (GJ-01)

???? ?????? ?? ?????

???? ??? ?????? ???????? CVS-0600-12N

???? ???? ????? ????????? ?? ??? ???? (BV-800-3WYN)

????? ??? ???

????? ???? ????? ????????

?????? ??? ????? ????? ??? ??? ???? ????? ?? 15 ????? 2019 ????? ??????? ??? ??????? ????? ????? ?? ????? ????? ?????? ??? ?????. ????? ????? ????? ?? ...

???? ??????? ???????? (API 600? 602? 603)

?? ?? ???? ???????? ??? ???? ????? ???? ?????? ???? ?????? ??????? ?????? ???? ???????? (?? ?? ????????). ???? ??????? ?? ???? ????? ???????? ??? ?? ????? ?????? ?? ...