RT-10-C-22，RT-10-H-22，油研减压阀，YUKEN减压阀，YUKEN油研单向减压阀
RT-03-B-22，RT-03-C-22，RT-03-H-22，油研减压阀，YUKEN减压阀，YUKEN油研单向减压阀
RT-06-B-22，RT-06-C-22，RT-06-H-22，油研减压阀，YUKEN减压阀，YUKEN油研单向减压阀
RT-10-B-22，RT-10-C-22，RT-10-H-22，油研减压阀，YUKEN减压阀，YUKEN油研单向减压阀
DB30-1-50
