Beijing LDH Technology Development Co., Ltd bụ a ụlọ ọrụ ọkachamara na gas nkewa akụrụngwa. E nwere tumadi integrated ụlọ ọrụ na imewe, nnyocha na mmepe, mmepụta na ahịa nke nitrogen generators, oxygen generators, ozone generators na mmiri mmiri nitrogen generator. Na afọ nke mmepụta na ahịa, anyị zutere enyi si n'ụwa nile ma guzosie ike a ọma ediomi. Ngwaahịa na-exported na Bangladesh, Indonesia, Pakistan, na Netherlands, Brazil, Australia na mba ndị ọzọ.