Smart Digital Door Lock St2 (4 In 1) Suppliers and Manufacturers

[Technical Indicators] 1. Industrial grade Indicator Name/Indicator Value Powdered Products (F) Needle Products (Z) Level 92 Level 93 Level 95 Level 92 Level 95 Appearance White or light yellow powder, without caking White or yellowish needle-like, without lumps Active matter,% 92.0 93.0 95.0 92.0 95.0 Free oil,% 1.2 1.2 1.2 2.0 1.5 Inorganic salt,% Sodium sulfate 5.8 4.8 2.5 4.8 2.5 Sodium chloride 0.15 0.15 0.15 0.15 0.15 Moisture,% 2.0 2.0 2.0 4.0 3.0 PH value (1% aqueous solution) 7.5-9.5 7.5-10 Whiteness (WB), 90 2. Toothpaste grade Indicator Name/Indicator Value Toothpaste Grade (Y) (I) Level (II) Level (III) Level Appearance White or yellowish powdery or needle-like, without caking Active matter,% 95.0 93.0 93.0 Free oil,% 1.2 1.2 1.2 Inorganic salt,% Sodium sulfate 2.5 3.2 4.0 Sodium chloride 0.15 0.15 0.15 Moisture,% 2.0 2.0 3.0 PH value (1% aqueous solution) 8-9.3 8-9.3 8-10 Whiteness (WB), 90 Foaming capacity/mm 180 Heavy metal (as Pb)/ (mg/Kg), 15 Arsenic content (as As)/ (mg/Kg), 3 Total bacterial count/ (CFU/G), 100 Total number of molds and yeasts/ (CFU/G), 100 Fecal coliforms/G Not to be detected Pseudomonas aeruginosa/G Not to be detected Staphylococcus aureus/G Not to be detected   3. Latex grade Indicator Name/Indicator Value Latex grade (powder, needle, liquid) Aggregate grade Seed level Liquid K12 Appearance White or yellowish powdery or needle-like, without caking Light yellow transparent liquid Active matter,% 94.0 92 28.5-30.5 Free oil,% 0.8-1.0 1.5-2.0 1.5 Inorganic salt,% Sodium sulfate 3.0 3.0 1.5 Sodium chloride 0.15 0.15 0.05 Moisture,% 3.5 3.5 - PH value (1% aqueous solution) 8-10 7.5-9.5 Whiteness (WB), 90 - Color Klett (30% active), - 60 4. Reagent grade Indicator Name/Indicator Value Reagent grade Level 99% Level 97% Appearance White flaky crystals White powder Solubility (1%, alcohol) Completely dissolved Solubility (10%, aqueous solution) Completely dissolved Chroma APHA (20%, deionized water), 15   - Active matter (%), â?¥ 99 (on dry basis) 97 Petroleum ether soluble matter (%), 0.2 1.0 Sodium sulfate (%), 0.5 1.5 Sodium chloride (%), Moisture (%), 1.0 2.0 PH value (1% aqueous solution) 6.0-8.0 6.0-11 Phosphate, 1ppm - Lead (Pb), 2ppm Iron (Fe), 1ppm Nitrogen, 5ppm - Arsenic (As), 0.1ppm Fraction content (%), 99.0 Absorbance (3%, deionized water) 230nm 0.4 260nm 0.1 280nm 0.1 - 410nm 0.01

Commodity:Avobenzone CAS No. 70356-09-1 Molecular Formula C20H22O3 Molecular Weigh 310.39 EINEC No. 274-581-6 Specification Quality standard: USP36 Appearance Off-white powder Assay 95.0-105.0% Melting range 81.0~86.0 Impurities Any individual impurity: 3.0% The sum of all of the impurities: 4.5% Loss on drying 0.5% Packaging and storage: 1kg/aluminum foil bag. 25kg/barrel, pharmaceutical packaging barrel. Sealed, stored in dark, with a shelf life of 2 years. Reference dosage: The hygiene standards for cosmetics stipulate that the maximum amount added shall not exceed 5%, and the general dosage is 1-4%. Usage: Sunscreen agent-1789 is the most effective fat soluble UVA filter and is a safe and effective UVA sunscreen approved by the US FDA for sale on the counter. It can effectively block UVA, thereby increasing the SPF value of sunscreen products. It can improve the efficacy of sunscreen products when used in combination with UVB filters, and BL-200 has the best effect when used in combination with octyl methoxycinnamate. BL-200 can increase its stability in the product. It has an extremely effective protective and repairing effect on human skin. Application: This product is soluble in oil and can be formulated into a cream using the usual method. However, the product turns red when it encounters metal ions, so other components such as formula water should not introduce metal ions. The equipment should be made of pure stainless steel, and an appropriate amount of EDTA-2Na should be added to the formula water phase to chelate with metal ions.

1,Name: Sodium nitrite Molecular formula: NaNO2 Formula weght:69.00 2Property: (1) ordinary sodium nitrite: white little crystals or light yellow  (2) dry powder sodium nitrate: white crystal,non-caking, showing loose status. Density:2.168. No odor, slightly salty. It is liable to deliquesce, dissolved in water,soluble in liquid ammonia,slightly soluble in ethanol and glycerin,Melting Point:271. Decomposition temperature is 320. It has oxidability and also has reducibility. It will slowly be oxidized into sodium nitrate in atmosphere, it can form nitrogen compound with nitrilo at low temperatures. 3Usage:It has been widely used in making nitro-compound and azo dye, mordant of textile dyeing, bleaching agent, metal heat finishing agent, cement early strength agent, and deicing agent etc. Note: The product should be stored in a cool, dry place to prevent it from moisture, heat and sunlight. This product can not be mixed with strong reductant, inflammable and explosive materials, food, feed and additives. â?¢ This product is toxic and should be properly kept and can not be eaten. 4 Specification: (Technical Standards:GB2367-2006) Item Unit Molten salt G High G First G Qualified G Dry powder G Assay % 99.3 99.0 98.5 98.0 98.5 Sodium nitrate % 0.6 0.80 1.00 1.90 0.80 Chlorides % 0.03 0.10 0.17 -- 0.1 Water insolubles % 0.02 0.05 0.06 0.10 0.06 Moisture % 1.0 1.4 2.0 2.5 0.2 Loose degree -- -- -- -- 95 5,Package: net 50kg net each in plasic woven inner plasic bag, or according to customers requirement.

1.Name: Sodium nitrate Chemical formula: NaNO3 Formula weght:84.99 2.Property: (1) ordinary sodium nitrate: white little crystals or light yellow (2) dry powder sodium nitrate: non-caking, showing loose status. Density:2.257. It is liable to deliquesce, dissolved in water, soluble in liquid ammonia, slightly soluble in ethanol and glycerin, Melting Point:308. While being heated up to about 380 it will decompose and release oxygen and turn into sodium nitrite,as the heating goes on, it will decompose into oxygen, nitrogen and nitrogen oxide. It has strong oxidability and can cause combustion explosion if being mixed with organic substance, sulfur, sodium nitrate etc. 3. Usage:  it has been wildly used in the glass industry, dye, dynamite, metallurgy, machinery, ceramic etc. 4. Specification: (Technical Standards:GB/T4553-2002) Item Unit High G. First G. Qualified G. Dry powder G. Assay % 99.7 99.3 98.5 99.3 Sodium nitrite % 0.01 0.02 0.15 0.02 Chlorides % 0.25 0.30 -- 0.25 Water insolubles % 0.03 0.06 -- 0.03 Moisture % 1.0 1.5 2.00 0.2 Carbonates % 0.05 0.10 -- 0.1 Iron % 0.005 -- -- 0.005 Loose degree -- -- -- 95 5.Package: net 25kg/50kg net each in plasic woven inner plasic bag,or 500kg net each in flexible container.

Commodity: Sodium Hydrosulfite Other name: Synonyms: Sodium Hydrosulphite; Sodium Dithionite; Dithionous acid, Disodium salt; Sodium Sulfoxylate CAS No.: 7775-14-6 Molecular Weight: 174.10 Chemical Formula: Na2S2O4 Product Description Appearance: White, crystalline powder. Product Feature Odor: Slight irritative. Specific Gravity: Unavailable Solubility: Soluble in water. Density: 2.19 pH: 6-7 pH Test-Method: PH test paper. % Volatiles by volume @ 21C (70F): 0 Boiling Point: Not applicable. Melting Point: >300 C Decomposes. Vapor Pressure (mm Hg): No information found. Bulk Density: ~0.9 Evaporation Rate (BuAc=1): No information found. Application 1. Widely used in textile industry for vat dyeing, reduction cleaning, printing and stripping, textile textile bleaching . 2. bleaching paper pulps , especially mechanical pulps, its the most fittable bleaching agent in pulps. 3. bleaching kaolin clay, fur bleaching and reductive whitening, bleaching of bamboo products and straw products, 4. in mineral, the compound of thiourea and other sulphides. 5. as reducing agent in chemical industry. 6. Sodium hydrosulfite food additive grade is used in foodstuffs, as bleaching agent and preservative dried fruits, dried vegetable, vermicelli, glucose, sugar, rock sugar, caramel, candy, liquid glucose, bamboo shoots, mushrooms and canned mushrooms. Packaging 50kg/100kg net in iron drums with double PVC bags Product Specification/Models NDEX 90%, 88%, 85%. FOOD ADDITIVE Na2S2O4, 90%, 88%, 85%, Fe 20ppm ZincZnOther heavy metal calculated as Pb, 1ppm Water Insolubles05% Shelf Life(month)12

[Alias] foaming powder; sodium lauryl sulfate; sodium lauryl sulfate; sodium dodecyl sulfate, sodium dodecyl sulfate [English name] Sodium dodecyl sulfate. [Abbreviation] SDS [CAS No.] 151-21-3 [Molecular formula] ROSO3Na R = C12alkyl, C12-C14alkyl [Molecular weight] 288.38 (R = C12alkyl), 296 (R = C12-C14alkyl) [Grade] It can be divided into industrial grade (GB/T15963-2008), toothpaste grade (QB/T2900-2012), latex grade and reagent grade according to application fields and standards. [Technical Indicators] [Performance and Applications] This product is a white or yellowish sticky substance, commonly used in detergents and textile industry. Belon to an anionic surfactant.It is easy to dissolve in water, has good compatibility with anions and nonions, and has good emulsification, foaming, penetration, decontamination and dispersion properties. It is widely used in toothpaste, shampoo, shampoo cream, shampoo, washing powder, liquid washing, cosmetics and plastic demoulding, lubrication, pharmaceutical, papermaking, building materials, chemical and other industries. (1) Used as detergent and textile auxiliaries, also used as toothpaste foaming agent, mine fire extinguishing agent, emulsion polymerization emulsifier, wool detergent, etc. (2) Used as anionic surfactant, emulsifier and foaming agent (Use 3) GB 2760-96 stipulates that it is a processing aid for food industry. Blowing agent; emulsifier; anionic surfactant. Used for cake, beverage, egg white, fresh fruit, fruit juice beverage, edible oil, etc. (4) It is used as an emulsifier for drugs, cosmetics and synthetic resins. Foaming agent for toothpaste and fire extinguisher. Used as a detergent for fine silk and wool fabrics. Flotation agent for metal beneficiation. (5) Used as detergent and textile auxiliaries, also used as toothpaste foaming agent, fire extinguishing foam liquid, emulsion polymerization emulsifier, pharmaceutical emulsion dispersant, shampoo and other cosmetics, wool detergent. (Use 6) Biochemical analysis, electrophoresis, ion pair reagent

Product Name: Ferrous Sulphate Heptahydrate Molecular Formula: FeSO4. 7H2O CAS No.: 7782-63-0 Mol Weight: 278.05 Usage and Dosage: 1. Industrially: ferrous sulphate heptahydrate is mainly used as a precursor to other iron compounds. It is a reducing agent, for the reduction of chromate in cement. 2. Nutritional Supplement: Together with other iron compounds, ferrous sulphate is used to fortify foods and treat iron-deficiency anemia. Constipation is a frequent and uncomfortable side effect associated with the administration of oral supplements. Stool softeners often are prescribed to prevent constipation. 3. Colorant: Ferrous sulphate can also be used to stain concete and some limestones and sandstones a yellowish rust color. 4. Water Treatment: Ferrous sulphate has been applied for the purification of water by flocculation and for phosphate removal in municipal and industrial sewage treatment plants to prevent eutrophication of surface water bodies. Storage: Storage Store in cool, dry, well ventilated area, removed from oxidising agents (eg. hypochlorites), acids, metals and foodstuffs. Ensure containers are adequately labelled, protected from physical damage and sealed when not in use. Large storage areas should have appropriate ventilation systems. Precaution: Flammability Non flammable. No fire or explosion hazard exists. Packing: Net weight 25kgs, 50kgs per each plastic woven bag Technical Specification Appearance: Light green crystalline powder Fe 19.7%min Pb 20 ppm max As2 ppm max Cd 5 ppm max Size Crystalline Powder

Commodity: Sodium Metabisulphite Molecular formula:Na2S2O5 Molecule Weight:190.10 H.S code:28321000 CAS:7681-57-4 Product Features Appearance : White Or Light Yellow Crystal Powder Odour: Sulfur Dioxide Taste : Salty Melting Poing : 150 Specific Density1.48 Ph : 4.0-4.6 Solubility : Soluble In Water ,insoluble In Alcohol Application: 1. For industry Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of stapk; Treatment agent of waste water; Rubber solidifying agent ;Perfume industry is served as hydrocarbon perfume aldehyde ; The hide profession employ to do to molt dose and pliable dose and wearproof dose ,The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment. 2.For food additive Bleach agent (e.g.candies, cake, bamboo shoots, etc);Loose agent (e.g.bread, cracker etc);Antiseptic and germicide (e.g.fruit juice, tinned foodbrews, the cereals food is defended storage etc);Inhibitor and freshen agent (e.g.day lily, seafood, fruit and vegetable etc) Specifications: Na2S2O5 97% min SO2 65% min Fe 0.0015% max water-Insoluble 0.01% max As 0.0001% max PH 4.0-4.6 Packing and Storage Knitted bags lined polyethylene plastic bags double packaging, Weighing 25Kg/50KG/1000Kg/1200kg. Transportation-and harsh rain. Stored in a cool, ventilated, dry place.

Commodity:Sodium persulfate Molecular Formula : Na2S2O8 Molecular weight : 238.13 Description Sodium persulfate is a white,crystalline,odourless salt.It is used as initiator for the Polymerization of monomers and as a strong oxidizing agent in many applications.It has the particular advantage of being almost non - hygroscopic,of having a particularly good storage stability as a result of its extremely high purity and of being easy and safe to handle. Transportation Road/Rail transport : GGVS,GGVE,ADR,RID/CLASS 5.1 Sea transport : GGV Sea/IMDG code : CLASS 5.1 Page 5185,UN no.1505 Water hazards class 1(slight water hazard) All information is given in good faith,but without warranty,since the conditions of use are outside our control. Verification by the user is recommended.Freedom from patent restriction cannot be assumed. Package (1) In 25kgs net multiple paper bags with one PE bag inner (2) In 25kgs net PE bags (3) In 25kgs net woven bags with two PE bags inner (4) In 1000kgs net big woven bags with one PE bag inner The above package is also with a pallet 1000kgs each. Storage NPS(SPS) is not combustible but assists combustion materials due to release of oxygen.Provided it is stored under appropriate condition.It must be stored dry in closed containers and protected from direct sunlight,heat and humidity.Impurities such as dirt,rust or traces of metal and reductants may cause catalytic decomposition.The product as supplied or in solution needs to be handled with appropriate care.The eye,skin and clothes must be protected when working with NPS(SPS) as damp powder or aqueous solution has a bleaching and slightly corroding effect. Application Polymerization : Initiator for the emulsion or solution Polymerization of acrylic monomers,vinyl acetate,vinyl chloride etc.and for the emulsion co-polymerization of styrene,acrylonitrile,butadiene etc. Metal treatment : Treatment of metal surfaces(e.g. in the manufacture of semiconductors; cleaning and etching of printed circuits),activation of copper and aluminium surfaces. Cosmetics : Essential component of bleaching formulations. Paper : modification of starch,repulping of wet - strength paper. Textile : Desizing agent and bleach activator - particularly for cold bleaching.(i.e.bleaching of Jeans). Others : - Chemical synthesis - Water treatment(decontamination) - Waste gas treatment,oxidative degradation of harmful substances(e.g.Hg) - Disinfectant ITEMS SPECIFICATIONS Appearance white crystalline salt Assay 99.0% w/w min Active oxygen 6.65% w/w min Chloride and chlorate(as CL) 0.005% w/w max Ammonia (NH4) 0.05% w/w max Manganese(Mn) 0.0001% w/w max Iron(Fe) 0.001% w/w max Heavy metals(as Pb) 0.001% w/w max Moisture 0.05% w/w max Decomposition of the product as supplied at above 65C Recommended storage temperature Normal Temperature Storage stability as from date of delivery 12 months

Available Colombian Thermal Coal Offered for Sale Effective 6/10/2022 # RESOURCE BTU PORT TYPE TONNAGE/MO. PRICE SULFUR ASH MOISTURE 1 RB-1 (F) 10,400 Bolivar/Brisas Thermal B 100K MT (3 Yrs) $MT 0.65% 9.2% 8.8% 2 RB-1 (F) 10,800 Bolivar/Brisas Thermal B 40K MT (Spot) MT 0.78% 5.5% 7.7% 3 RB-1 (F) 12,400 Bolivar/Brisas Thermal A 100K MT (3 Yrs) MT 0.67% 4.5% 5.9% 4 RB-1 (F) 12,661 Bolivar/Brisas Thermal A 100K MT (3 Yrs) MT 0.89% 6.7% 3.8% 5 RB-1 (F) 12,675 Bolivar/Brisas Thermal A 100K MT (3 Yrs) MT 0.41% 1.8% 7.1% 6 RB-2 (T) 13,200 Bolivar Thermal A 180K MT (3 Yrs) MT 0.94% 3.3% 10.6% All Thermal Coal Listed Above Subject to Prior Sale This is our most recent distribution sheet outlining available thermal coal we have directly ex. Colombia, SA. These long-term and spot allocations are structured through our established production network. We can deliver product to the vessel less expensively than in the US due to lower labor cost and excessive US logistics charges. (Rail/Barge)

1. Berry copper wire scrap conforming to ISRI standards/specs. 2. Minimum order quantity: 200 Metric tons. The seller can offer 1000MT - 2000MT per month / per shipment on a long term basis ( for quantities greater than the above mentioned, please write to us in detail ) 3. Origin of scrap wire ( either S.A / Europe / Russia ) seller's option. 4. SOP: Letter of Intent with Bank Confirmation letter from the Buyer (trading companies). If the buyer-importer is end-user/consumer, BCL is not required but due to manufacturing licence/end products' details and other information as required before the execution of a contract. 5. Price $5500pmt CFR one safe port 6. Delivery/shipment - shall be provided after the receipt of LoI with BCL and due diligence. 7. Payment terms by Irrevocable, confirmed Letter of credit from first-class/internationally recognized bank