1.Widely in oleum extraction, oleum conflans, eget industria, militum et alia periculo environment et Offshore oleum tabulatis, oleum tankers et aliis locis ad communem luminatione et opus lucis;
II. Energy Saving project et luctandi project et replacement de difficile locis;
III. Spermatophyta explosivae Gas environment zonam I, zona II;
IV. Explosivae atmosphaera, genus ⅱa, ⅱb, ⅱc;
V. Idoneam combustibilem pulvis elit in area XXII, XXI;
VI. Idoneam ad altum tutela requisita, humida locis;
VII. Ex idoneam environments from - L ℃ ad C.