Holy city limited is located in Tianjin, a sea city. We’re in the field of oil disposal, construction machine project. We offer project contractor entire service include sketch design, machine supply, installation service and after sales service. We mainly face to Africa market. We provide different price& scale level blue print to meet individual demand. Oil project products include Industrial filter press, oil pump, oil sludge incinerator, oil distillation machine, hollow brick machine, ect. Here we sincerely wish to develop long-term, wi