产品等级

• Hexagon head screws - product grade c
  六角头螺钉.产品等级c级
• Hexagon head bolts - product grade c
  六角头螺栓.产品等级c级
• Square thin nuts - product grade b
  方扁螺母.产品等级b级
• This reference gives examples for products classification
  该产品分级参考,举例说明了如何区分产品等级)
• Product grade for major ornamental plants - part 2 : flowering potted plants
  主要花卉产品等级第2部分:盆花
• Hexagon head bolts - product grade c iso 4016 : 1999 ; german version en iso 4016 : 2000
  六角头螺栓.产品等级c
• Hexagon nuts - product grade c
  六角头螺母.产品等级c级
• Hexagon head screws - product grade c iso 4018 : 1999 ; german version en iso 4018 : 2000
  六角头螺钉.产品等级c
• Product grade for major ornamental plants - part 3 : foliage potted plants
  主要花卉产品等级第3部分：盆栽观叶植物
• Hexagon head bolts with metric fine pitch thread - product grades a and b
  米制细牙螺纹六角头螺栓.产品等级a和b级