hat
Holtop bati yon sistèm sètifika son nan ISO 9001, ISO14001, OHSAS18001 osi byen ke sistèm sètifikasyon pwodwi. Nou gen nasyonal apwouve laboratwa a enthalpy, fò R & D ekip ak posede 30+ rive.
eng
Holtop builds a sound certificate system of ISO 9001, ISO14001, OHSAS18001 as well as product certification systems. We have the national approved enthalpy laboratory, strong R&D team and possess 30+ patents.