bids are invited for installation of chemical earth system in gangtok ba 1 19 providing providing new earth system through chemical earthing at 13th mile bts sites , providing providing new earth system through chemical earthing at 17th mile bts sites , providing providing new earth system through chemical earthing at changu mile bts sites , providing providing new earth system through chemical earthing at serathang bts sites , providing providing new earth system through chemical earthing at thegu bts sites , providing providing new earth system through chemical earthing at samdong te bts sites , providing providing new earth system through chemical earthing at mangan i bts sites , providing providing new earth system through chemical earthing at samdong bts sites , providing providing new earth system through chemical earthing at chungthang p sites , providing providing new earth system through chemical earthing at dombag bts sites , providing providing new earth system through chemical earthing at dzongu bts sites , providing providing new earth system through chemical earthing at lacheen bts sites , providing providing new earth system through chemical earthing at lachung bts sites , providing providing new earth system through chemical earthing at lachung army bts sites , providing providing new earth system through chemical earthing at lanka bts sites , providing providing new earth system through chemical earthing at samdong-d bts sites , providing providing new earth system through chemical earthing at theng bts sites , providing providing new earth system through chemical earthing at ravangla bts sites total quantity : 18