1. Kev Tsim Kho:Siv rau hauv cov qauv tsim, kev txhawb nqa tsev, thiab cov pas nrig txhawb nqa.

2. Kev Tsim Kho Vaj Tse:Ua haujlwm hauv cov choj, cov pej thuam sib txuas lus, thiab cov pej thuam xa hluav taws xob.

3. Kev Tsim Khoom Lag Luam:Siv rau hauv kev tsim cov tshuab, cov khoom siv, thiab cov qauv txhawb nqa.

4. Kev Thauj Mus Los:Siv rau hauv kev tsim kho nkoj, txoj kev tsheb ciav hlau, thiab cov thav duab tsheb.

5. Kev Ua Rooj Tog:Siv rau cov rooj tog hlau, cov txee, thiab lwm yam khoom siv.

6. Chaw Khaws Khoom thiab Chaw Cia Khoom:Siv rau kev tsim cov racks, shelves, thiab cov systems cia khoom.

7. Kev Tsim Khoom:Siv rau hauv ntau yam txheej txheem tsim khoom, suav nrog kev vuam thiab kev sib dhos ntawm cov qauv hlau.

8. Cov Khoom Kho Kom Zoo Nkauj:Siv rau hauv kev tsim vaj tsev, railings, thiab lwm yam khoom dai kom zoo nkauj.