Water conservation by species
The permissible concentration of silver in water is limit! by SanPiN and is 0.05 mg/l. This amount cannot be […]
The permissible concentration of silver in water is limit! by SanPiN and is 0.05 mg/l. This amount cannot be […]
Perishability: unlike a product, a service cannot be stor if it is not us. To avoid relying on product-orient actions