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, including building and residential block planning, structures, water supply and drainage, air-conditioning and mechanical..., including building and residential block planning, structures, water supply and drainage, air-conditioning and mechanical... Apply Now

working of the hotel's gas and air conditioning system 酒店各控制点，燃气、空调系统的正常工作 The hotel's fire indicator board, fire wardens... Apply Now

, including building and residential block planning, structures, water supply and drainage, air-conditioning and mechanical..., including building and residential block planning, structures, water supply and drainage, air-conditioning and mechanical... Apply Now

, including building and residential block planning, structures, water supply and drainage, air-conditioning and mechanical..., including building and residential block planning, structures, water supply and drainage, air-conditioning and mechanical... Apply Now

on various types of equipment such as laundry equipment, kitchen equipment, heating, ventilating and air conditioning equipment... Apply Now

, heating, ventilating and air conditioning equipment, including motors, pumps, fans, water treatment plants, sewage treatment... Apply Now

, heating, ventilating and air conditioning equipment, including motors, pumps, fans, water treatment plants, sewage treatment... Apply Now

, water supply and drainage, air-conditioning and mechanical ventilation, electric power and telecommunications, environment..., water supply and drainage, air-conditioning and mechanical ventilation, electric power and telecommunications, environment... Apply Now

, water supply and drainage, air-conditioning and mechanical ventilation, electric power and telecommunications, environment..., water supply and drainage, air-conditioning and mechanical ventilation, electric power and telecommunications, environment... Apply Now

to repairs on various types of equipment such as laundry equipment, kitchen equipment, heating, ventilating and air conditioning... Apply Now