Those are plastic moulding clasps which are customized ones and used on bags, They are example for  your reference, we do customized OEM business, please send us drawings or samples if you have plastic parts need to be done in China, we will provide you same parts with high quality and best price.

Shanghai Seven Mold provides our customers One Stop Tooling and Manufacturing Service for plastic injection moulding and metal stamping parts. Besides these services, we also offer secondary operation to meet different requirements, such as pad printing, silk-screen printing, painting, plating(chrome or galvanized, etc.), final assembly and packaging.