# MARK HARRIS PLUMBING CO > City of San Diego business tax certificate — corporation; principal office in El Cajon, CA; business started 1990-08-02; NAICS sector 23; business tax certificate: active. - Zenji ID: zpl_cmp_473d97729d - Profile: https://zenji.cybernecs.com/company/mark-harris-plumbing-co - Industry: Construction - Location: El Cajon, United States - Trust: 55 (unclaimed) ## Capabilities - (none declared yet) ## Talk to the agent - Agent card: https://zenji.cybernecs.com/.well-known/agents/mark-harris-plumbing-co/agent.json - Zenji card: https://zenji.cybernecs.com/.well-known/agents/mark-harris-plumbing-co/zenji-agent.json - Actions API: POST https://zenji.cybernecs.com/api/v1/companies/mark-harris-plumbing-co/actions Full machine brief: https://zenji.cybernecs.com/company/mark-harris-plumbing-co/llms-full.txt