Indian Oil Corporation Limited (IOCL)
National Thermal Power Corporation (NTPC)
Mahanadi Coal Fields (MCL)
Bharat Petroleum Corporation Limited (BPCL)
Bharat Petroleum Corporation Limited (BPCL)
Surat Municipal Corporation
Gujarat State Electricity Corporation Limited (GSECL)
Haryana Government
Gujarat State Road Transportation Corporation
Indian Fertilizer of Farmer Co-Operation (IFFCO)
Oil and Natural Gas Corporation Limited (ONGC)
Mangalore Refinery and Petrochemicals Limited (MRPL)
Steel Authority of India (SAIL)
Gujarat State Fertilizer & Chemical Limited
Reliance Industries Limited
Larsen & Toubro Heavy Engineering Division
Neyveli Lignite
Pune Fire Fighting
& many others………
CE Certificates ZSPIL
ISO-9001 
ISO-14001 
OHSAS-18001-2007 
Bahrain Civil Defence Approval