Working of diamonds and other precious and semi-precious stones including the working of industrial quality stones and synthetic or reconstructed precious or semi-precious stones
Retail sale of other household appliances n.e.c. ( security systems, such as locking devices, safes, and vaults, without installation or maintenance services etc. , wooden, cork and wickerwork goods, sewing and knitting machine and other household utensils and durables n.e.c.)
Wholesale of other machinery, equipment and supplies n.e.c. including computer-controlled machine tools and computer-controlled sewing and knitting machines