membrane backflow prevent permanent makeup needle

{"cid":"91196771","title":"OEM 9000-31000\/min Tattoo Permanent Makeup Machine with Adjustable Needle","imgUrl":"https:\/\/img.chinax.com\/nimg\/e8\/1e\/2423d62d25918380058feeae18f6-200x200-1.jpg","attrs":{"Price":"Negotiation","Brand Name":"","Model Number":"TC-AZ","Minimum Order Quantity":"100pcs","Delivery Time":"5-16 Days","Place of Origin":"China","Packaging Details":"1pc\/kit","Payment Terms":"T\/T,Western Union,MoneyGram,paypal","Supply Ability":"2000000 Set\/Sets per Month","Certification":"CE","Material":"Aluminum","Color":"different Colors","input":"100-240V 50HZ-60HZ","Output":"DC 7.0V","OEM":"Avaliable","MOQ":"100Pcs"}}

{"cid":"91179775","title":"Permanent Makeup Tattoo Digital Machine Kits Strong Power Tattoo Gun With Needles","imgUrl":"https:\/\/img.chinax.com\/nimg\/aa\/ba\/43dece5eacfa5810706aa65ee542-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"Qingmei","Minimum Order Quantity":"1 sets","Delivery Time":"3 working days","Certification":"CE","Place of Origin":"China","Payment Terms":"T\/T, Western Union,Paypal, MoneyGram","Supply Ability":"100 kits per week","Packaging Details":"Standard Package","Color":"Black","Length of needles":"Various","Use for":"Perament Make -up","Gun type":"Electric","Features":"Low Noise,Permanent, Digital Control Panel","Output":"4.5V, 0.3A","Plastic and Metal shell":"Plastic and Metal shell"}}