Standard: The utility model patent certificate Number: 5491523 Issue Date: 2016-01-28 Expiry Date: 2026-01-28 Scope/Range: Drill rod on the rod machanism Issued By: State Intellectual Property Office of the P.R.C

Standard: CQGC Number: B040080374 Issue Date: 2004-04-01 Scope/Range: Horizontal Directional Drilling Machine Issued By: China Light Product Quality Assurance Center

Standard: QUALITY MANAGEMENT SYSTEM Number: 10114Q10837ROM Issue Date: 2017-03-25 Expiry Date: 2017-03-24 Scope/Range: design,development and manufacture of horizontal directional drilling machine Issued By: BEIJING ZHONGLIAN TIANRUN CERTIFICATION CENTER

Standard: The utility model patent certificate Number: 5491523 Issue Date: 2016-01-28 Expiry Date: 2026-01-28 Scope/Range: Drill rod on the rod machanism Issued By: State Intellectual Property Office of the P.R.C

Standard: CQGC Number: B040080374 Issue Date: 2004-04-01 Scope/Range: Horizontal Directional Drilling Machine Issued By: China Light Product Quality Assurance Center

Standard: QUALITY MANAGEMENT SYSTEM Number: 10114Q10837ROM Issue Date: 2017-03-25 Expiry Date: 2017-03-24 Scope/Range: design,development and manufacture of horizontal directional drilling machine Issued By: BEIJING ZHONGLIAN TIANRUN CERTIFICATION CENTER