Feature: Lead-free and environmentally friendly manufacturing, close to colorless and transparent liquid, stainless steel flux is treated with low toxicity or even non-toxic in production technology. The process of weakening the harmful substances in the flux can reduce the physical injury of the front-line personnel who have been exposed to such products for a long for time, and use it with confidence. This product has the ability to quickly remove metal oxide layer, has excellent ability to assist the flow of tin, and the speed of tin loading is fast, which can make the tin alloy solder and the welded object form a dense alloy layer, the solder joints are full, bright, firm, and good welding performance. Powerful flux, multi-functional flux, is your powerful helper for making mobile phone batteries (welding nickel sheets) and making plugs (welding stainless steel, iron sheets). Just a light for touch can help you easily weld stainless steel and white steel sheets. , Copper, iron, galvanized sheet and other functions that cannot be welded with ordinary rosin. The spot welder can no longer be used when welding batteries. Product Usage: Powerful welding This product is widely used for low-temperature welding of various kinds of stainless steel products, stainless steel advertising characters, galvanized sheets, nickel, copper, iron and other metals with high-quality requirements. Metal letters, equipment, electronic cigarettes, fishing gear, beauty needles, clocks and instruments, precision parts, stainless steel soy sauce bottles, stainless steel utensils, welding and repair of iron for tank water tanks, automobile water tanks (radiators), lamp manufacturing, water pipe connections, and Welding of various PCB boards. This product can be used for welding processes such as brushing, hand dipping, wave soldering, etc. After welding, the residual flux is cleaned with water or wiped with a damp cloth. The tinning speed is uniform and fast, which can make the tin solder and the welded object form a dense alloy layer. Good welding performance, full, firm and bright solder joints. Specification: Color: Gray Material: Flux Capacity: 20ml Quantity: 1Pc Composition: ZnO 24%, NH4cl 30%, Hcl 6%, C3H3COH 30%, for H2O 12%, Melting point: 200 () Scope of application Suitable for soldering tin series such as battery piece, white steel plate, galvanized plate, copper iron, various metals Note: Size for manual measurement, there may be a 0 to 2 for cm error, belongs to the normal phenomenon. And due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 20ml x Flux