Explosion proof ntsuas rau cov koob yees duab tawg

Sep 08, 2024 Tso lus

1. Cov pov thawj tawg / Ex "d";
2. Ua kom muaj kev nyab xeeb / Ex "e";
3. Intrinsic kev nyab xeeb EEx "i";
4. Zoo siab / "p";
5. Roj filling / "o";
6. Xuab zeb sau / "q";
7. Spark dawb EEx "n";
8. Sealing "m" thiab lwm yam