HG 2233-1991
HG/T 3604-1999
Determination of viscosity number and limiting viscosity number of polyoxymethylene in dilute solution
GB/T 27553.2-2011(\u82f1\u6587\u7248)
塑料青铜钢背三层复合自润滑板材技术条件 第2部分:带改性聚甲醛(POM)减摩层的板材
GB/T 1847-1980
Test method for the viscosity of the dilute solution of polyformaldehyde resin