专业从事，材质为：不锈钢、黄铜、铝合金、钛合金、金钢钢、尼龙（内六角孔、梅花孔、十字）紧定螺钉的制造企业。执行标准：美标、英标、日标、德标、国标、以及华申标准。

Ningbo Huashen Yulu Set Screws Co.,Ltd. is specialized in producing set screws with the material of stainless steel, brass, alloy steel etc. Our company pioneered others for ISO9001 international quality system and passed evaluation in 2002. We now own more than 24 sets of imported production.