1. Hkamja lam hpe shawng nnan lang ai: Arung
2. Maintenance: cooler gaw high-tech galaw ai arung arai langai mi re. Nang lang ai shaloi hkrat sum ai lam (sh) hkra machyi ai lam n byin na matu, dai hte seng ai shiga ni hpe atsawm sha hti ra ai. Dai aten hta sha, dai arung arai ni a prat hpe jat ya na matu, dai hpe ayan san seng hkra galaw nna, gram lajang ra ai.
3. Hka san hpe jasan jaseng ai hte gram lajang ai shaloi, katsi ai shara amyu myu hte maren jasan jaseng na matu htap htuk ai san seng ai ntsin hpe lata ra ai. Grai n-gun ja ai ntsin ni hpe hkum lang.
4. Layout environment: cooler a layout makau grup yin gaw jan a nhtoi hte hka lim ai makau grup yin hpe koi ra ai, nbung n-gun rawng ai, galu kaba ai hte katsi ai shara ni hpe tawn da ra ai.
5. Repair hte galai na: Arung arai ni hkrat sum ai (sh) ahkyak ai daw ni hpe galai ra ai rai yang, hpaji ninghkring ni a gram lajang ai masha ni gaw dai hpe hparan ra ai. Ahkaw ahkang n jaw ai sha galai shai na (sh) gram lajang na.