China yogulitsa kutentha kusintha mtundu utoto thermochromic utoto inki thermochromic pigment Kupanga ndi Factory |Topwell

kutentha kwakukulu kumasintha utoto wa utoto wa thermochromic utoto wa thermochromic pigment

Zam'mbuyo: Invisible Fluorescent Pigment UVA UVB Inorganic and Organic for Security Inks ndi Paints

Ena: Kuwala kwakuda kwa UV kwakuda kosaoneka kwa pigment 365nm anti-chinyengo kwa inki yachitetezo

Lembani uthenga wanu apa ndikutumiza kwa ife