高精度节能阀ELFBG-03-125-C-E-L-20T ELDFG-01-35-3C2P-XY-10 ELDFG-03-40-3C2P-XY-10 ELDFG-01-10-3C2P-XY-10 ELDFG-03-80-3C2-XY-10 ELDFG-03-80-3C40-XY-10 ELDFG-01-35-3C40-XY-10 ELDFG-03-40-3C2-XY-10 ELDFG-03-40-3C40-XY-10 ELDFG-01-10-3C40-XY-10 ELDFG-01-10-3C2-XY-10 ELDFG-01-20-3C2-XY-10 ELDFG-01-35-3C2-XY-10 ELDFG-03-80-3C2P-XY-10 ELDFG-01-20-3C2P-XY-10 ELDFG-01-20-3C40-XY-10