Peng Liu@pengliuFollow BadgesProblem Solving CertificationsCertificate: Problem Solving (Intermediate)VerifiedskillCertificate: Problem Solving (Basic)VerifiedskillWork Experiencepengliu has not updated employment details yet.Educationpengliu has not updated education details yet.Linkspengliu has not updated links details yet. Skillspengliu has not updated skills details yet.