Code for construction and acceptance of grounding device in electrical equipment installation engineering (gb50169-2006)..
Backfill construction is actually not difficult. How many people have done it according to the specifications?
88 photos, take you to fully understand the detail control of the whole construction process, it is recommended to collect!
Phase 1271 Supreme Court: if the employer knows that the actual constructor borrows the qualification to undertake the project, and the rights and obligations are directly formed between the two parties, the contractor has no right to claim the project price from the employer!
