Inter branch transfer of stock

Transfer to the registered Additional place is not regarded as supply; only delivery note require.

Under Works contract, if we do supply of goods & service together where Goods comes under 28 % tax slab & service comes under 18% tax slab-here whether we need to raise bill for 18% tax put together under GST Act –is this acceptable or else we need to raise the separate bill for Supply & service with actual tax rate.