1.Bracket type
EB---thermal-insulated type
CA---cool-insulated type
EC---thermal-insulated and cool-insulated type
EA---general type
2.Connect type
K ---work-carrier type
H ---welding type
3.Bottom plate type
1---sliding type(the sliding between polythylene and non-ruststeel,friction-coefficient0.1);
2---guiding type(the sliding between polyethylene and non-ruststeel,friction-coefficient0.1);
3---sliding type(the sliding between polyethylene and polyethylene,friction-coefficient0.06);
4---guiding type(the sliding between polyethylene and polyethylene,friction-coefficient0.06);
5---sliding type(the sliding between carbon steel and carbonsteel,friction-coefficient0.3);
6---sliding type(the sliding between carbon steel and carbon steel,friction-coefficient 0.3);
7---welding consolidation type
8---limit apron consolidation type